US1691112A - Typewriting machine - Google Patents

Description

G. G. GOING TYPEWRITING MACHINE Nov. 13, 1928.

Filed March 5, 1927 IN VE N TOR Patented Nov. 13, 1 928.

GEORGE G. GOING,-OF MIDDLETOWN, CONNECTICUT, ASSIGZ'NOB, BY MESNE ASSKGN MENTS, TO REMINGTON TYPEWRITER COMPANY, A CORPORATION OF NEW YORK.

TYBEWBITING MACHINE.

Application filed March 5, 1927. semi No 173,074.

Mylinvention relates to typewriting andlilie machines and more particularly to line spacing mechanism therefor. l

The main object-of the invention, generally stated, is to provide comparatively simple,

yet highly effective, mechanism of the character specified in which provision is made for assuring an engagement of the linespac= ing pawl withthe proper tootlrof the ,line spacing wheel in accordance with the setting of the line'space regulating dev ce, and in which effective means are provided for preventing overthrow of the line spacing wheel and platen.

To the above and other ends which will hereinafter appear my invention consists in the features of construction, arrangements of parts and combinations of devices set forth-in the following description and particularlyv pointed out in the appended claims.

In the accompanyingdrawings, wherem like reference characters. indicate corresponding parts in; the differentviews:

Figure 1 is a'detail, fragmentary, top plan view of one endof atypewritercarriage shownequipped with the devices of my'invention. 1

Figure 2,is' a detail, fragmentary, perspective view. of the line spacing wheel,-1ts detent and some-ofthe associated parts.

Figure 3 is an end view of the construction represented in Fig. 1;, with parts broken away. a

Figure 4a isa fragmentary, detail sectional view showing some of the parts; represented in Fig: 2; the section iheing taken on the line 4 4 in Fig. land lool'ring in the direction of the arrows at said line.

Figure 5 is a detail, bottom plan view showing the returningspring for the line spacing lever together with thehousing for thespring; and the mannerof connectingit to saidlever, etc. I V

Figure 6 is an enlarged, detail, side view of the line space regulating device and 'the gua rd member carried thereby. V Figure 7 is a detail, fragmentary sectional view taken on theline .7-7 of Fig. 1 and looltin the direction of thearrows at said line. '1 v The presentinvention is in the nature of an improvement on the construction disclosed in my Patent No. 1,606,862 dated Nov. 9, 1926. a r

I have shown my invention in the presenti instance embodied in the carriage of a Items ington-Noiseless machine in which the in-.

vention may be readily embodied without modifying, or-materially modifying, exist.- ing structural features thereof. It should be. understood, however, that the inventionis not restrictedto use in such machinesbut may be-employed in typewritingand like.1na-, chines generally, wherever found available.

The carriage comprisestwo end, plates,

only onev of which, the left-hand end plate:

1, is SllOWll. nese end plates have bearing openings to receive the supporting meansfor a cylindrical. platen 2.

A supporting brackets is detachably fixed on and supported by the end platel, as disclosed in my patent hereinhefore referred to, and constitutes a support for certainof the line spacing devices 'as-will hereinafter ap- 136312 a A line spacing wheels isconnected to the platen by a clutch (not shown) which is controlled by afinger wheel 5. I GOZLCtlIlfI with the teeth of the line spacing wheel. and arrange'd'on top of the latter is a spring-pressed detentroller 6, supported on a spindle 7 carried by a detent carrier, lesignated as a whole by the reference numeral 8. This carrier. is preferably made of sheet metal and themai-n body portion thereof ispreferablysubstantially U=shaped in cross section to provide side supporting arms for the spindle. 7.

,These arms at the rear ends thereof are aperturedto receive a bearingsleevet) on which the carrier is mounted for pivotalmovement toward and away from the line spacingwheel. The stem of a headed. screwq passes through said hearingsleeve 9 andis receivedat its threaded end in a tapped opening in the left? hand end of a tie rod a, usually employedto connect the end plates of the carriage. -The bearing sleeve 9 isof greater lengtl than the distance between the outer sides of the parallelarms of the carrier 8. dVhen, there.- fore, the screw 9 is tightened it will cause the sleeve tobe firmly hel'dhetween the head of the screw and the end plate 1 without, however, exerting any binding action on the carfree to turn on the bearing The stem of the screw 13 passes through an opening in the arm 12 and through collars larranged on opposite sides of said arm. By t ghtening the screw. 13 thearm 12 1S firmly held in the position to which it may be adjusted.

This provides a simple means by whichthe forcev of the spring exerted on the detent carrier may be adjusted at will. 'One of the side arms of the detent carrier 8 is extended forward of the detent roller, as

shown, to provide a forward extension 15 having an upper contact edge v16 which is inclined to provide a cam-like bearing surface. It will be seen that the carrier 8 is substantially horizontally "disposed and extends from its rear pivoted end to the forward free end over the line spacing wheel, the arm 15 being at a higher elevation than but offset to one side of said wheel. hen the line spacing devices controlled by the usual line spacing lever are actuated, a part thereof. at

i the last portion of the stroke, will engage the inclined Contact edge 16' of the carrier and forcibly wedge'the detent'roller down into engagement with the teeth of the line spacing wheel thereby preventing an overthrow of said wheel and the platen connected therewith,'as will'hereina'fter more clearly appear. It will be understood that at this time the carrier 8 acts in the nature of'a comparatively long lever carrying the detent roller 6 intermediate the ends thereof to 'eiiectivelyhold the detent roller against the wheel and pre vent overthrow thereof. the pivot of the carrier and the part engaging the free end of the carrier effectively resisting both a longitudinalmovement of the carrier and a lateral movementthereof away from the line spacing wheel. p

The means by which the line spacing wheel is turned step by step comprises, in the pres ent instance, a line spacing pawl 17 pivoted atone end on a headed, shouldered pivot screw 18 received at its threaded end in a tapped opening in asupporting car 19. As more clearly shown in Fig. 7, the outer end of the screw 18 extends beyond the car 19 and receives a shouldered nut 20 which acts as a lock nutfor the screw 18. The cylindrical hub 21 of this nutconstitutes an abutment, contact or lockingmember which coacts with the contact edge 16 on the detent carrier 8 when the line spacing pawl 1'? reaches the end of its line spacing movement, as indicated in dotted lines in Fig.4. This locks thedetent carrier and detent against movement away at 23 to receive the stem or" a headed guide screw 24 received at its threaded end in a tapped opening in the bracket. An off-set arm of the slide is connected forward of the ear 19'withan arm 25 of an angular line space lever 26. The connection between the line spacing lever and sllde is best shown 111 Fig. 5, from which it'will be seen that a depending pin 27 in the lever arm 25 enters a short slot 28 in the slide 22. This same pin 27 constitutes meansfor firmly connecting an upstanding post 29 to the lever arm 25. This post, after a slight extent of lost motion of the arm 25 relativelyto the slide 22 (due to the pin and slot connection 27-28) will coact with the edge 30 of the pawl above the pivot 18 thereof, and tends to hold the pawl against accidental upward displacement. The line spacing lever which is made of two connected parts is pivoted on a shouldered pivot screw 31 threaded into the bracket 3 and firmly held in place by a lock nut 32, as shown in Fig. 5. Adepending pin 33 on the lever arm 25 passes through a slot 34 in the bracket and is connected to one end of a'coiled returning spring 35. The opposite end of this spring is connected to an up wardly extending pin 36 carried by a sheet metal housing 37 for the spring. This housing is substantially U-shaped in cross section, and from one of the side arms extends an integral foot piece 38' supported against the bottom Wall of the bracket and held in place by the nut 32. The line spacing lever includes a forwardly projectin arm 39 which terminates in a finger piece ?not shown) by which the lever and the parts controlled thereby may be actuated as the carriage is returned to the right. This arm with its bearing portion is connected to the arm 25 by a screw 40. I

' Provision is made for'regulating the point in the throw of the line spacing pawl 17 where it is permitted to engage the line spacing wheel, thus determining the extent of movement transmitted to said wheel. present instance the construction includes a line space regulating device 41 in the nature ota substantially horizontally disposed arm that extends fore and aft of the machine. The

line spacing pawl 17 carries alaterally projecting pin 42 which extends over and is adapted normally to bear on the upper conout of engagement with the line spacing wheel but allows the pawl to engage the wheel at different points in the throw of the pawl In the I dependingon the adjustment of the regulatmg devlce. Sald regulating device is plvoted at its rear end on a pivot screw 44 supported by an arm 45 on the bracket 3. The lower edge of the regulating device is provided with three locking notches 46, 47 and 48. A depending arm 49 on the bracket 3 has pivoted at the lower end thereof, as at 50 (Fig. 3), a controlling member or arm up at substantially right angles to the regulating member 41. The upright arm 51 carries a laterally projecting pin 52 which engages in any one oi"; the three locking notches 46, 47 and48, depending on the fore and art adjustment of the controlling arm 51. This adjustment of the controlling arm determines the height to which the line space regulating arm 41 is adjusted around its pivot 44, and thereby determines whether the line spacing wheel will be moved the extent of one, two or three teeth thereof at each actuation of the line spacing pawl. In order to facilitate an adjustment oi the controlling arm 51 I have provided 1t with an upwardly extending inte ral finger piece 53 which may be conveniently grasped by the operator to shift the arm 51 and the parts controlled thereby. I also have provided indicating means in order to indicate to the operator whether the mech.

anism is set for a line feed of one, two or three teeth of the wheel. 7

Such indicating means comprises a flange 54 formed as a part of the arm 51 and l1 ving indices 1, 2 and 3? on the upper side thereof. One or another oi these indices will register with the overlying pin'42 on the line spacing pawl, in accordance with the setting of the arm 51 for line spacing of one, two or three teeth of the wheel as in my prior construction.

By my present invention I have provided improved means for insuring the engagement oi the line spacing pawl with the proper tooth of the wheel at each actuation of the pawl, in accordance with the setting of the hue space regulatlng dev ce 41 for a one, two or threete-eth movement of the wheel, andnot permit a faulty operation by engagement of the wheel which would result in an improper line space. Such means comprises what 1 term a guard member in the nature of an arm 55 pivoted at one end,as at 56 preferably to the line space regulating arm 41. The main body of the arm55 is oil-set from the pivoted port-ion thereof, so as to overlie the contact edge 43 of the regulating device. The lower edge 57 oi" the guard arm gradually slopes towards the member 41 as the rear iiree end of theguard arm is approached. The sin 42 on the line spacing pawl underlies t 1e guard arm and the latter prevents said, pin from moving oil the edge 43 in the rapid operation of the pawl, as will presently appear. It will be seen that the guard member 55 is in the nature of an angular lever, the depending arm 51 that extends 58 of which is connected to one end of a contractile spring 59 whose force 18 directed out of line with the pivot 56 of the member 55.

The lower end of this spring is connected to a suitable point, as to an arm 60 on the con trolling member or arm 51. This spring has a two-fold function. It acts on the guard member 58 and through the latter tends to press the pin down on the contact edge 43 of the line saace regulating member, and as the pin 42 advances along said contact edge it forces the free end oi the guard arm up againstthe force of the splin 59, thus prevent the pin 42 in a rapid operation oi the pawl mom moving off the edge 43 of the regulating member. Consequently the pawl will be accurately guided and caused to enthe proper tooth of choline space wheel irrespective of the position of adjustment of the regulating device 41. By reason of the fact that the guard member 55, 58 is carried by and adjusted with the regulating device 41 in the adjustment of the latter, said guard. member will always hear the same normal relation to the pin 42 and always be positioned to accurately coact therewith.

The second function of the spring 59 is to hold the member down in engagement with "What I claim as new and desire to secure by Letters Patent, is

' 1. In a typewriting machine, the combination oi? a line spacing wheel, a line spacing pawl coacting with said wheel to effect an in termittent step-hystep forward feed of the platen, an adjustable line space regulating device on which. said pawl normally rests and on which it has a sliding movement in its line spacing operation, and an overlying arm that holds the pawl against accidental displacement t'rom saidfregulating device without interfering with the return movement otsaid pawl independently oi? the wheel after each line spacing movement is effected.

In a typewriting machine, the combinaion of a line spacing wheel, a line spacing pawl, an adjustable line space regulating device on which said pawl norm allyrests and on which it has a sliding 11101'81116115111 its line spacing operation, and overlying spring pressed arm enacting with said pawl and exerting its spring force against the pawl to prevent an accidental displacement thercoffrom said regulating device.

3. In a typewriting machine, the combina tion of a line s acin wheel a line s acin q 7 b pawl, coactmg with said wheel to efiect an 1ntermittent stepby-step forward feed of the platen, an adjustable line space regulating device on which said pawl normally rests and on which has a sliding movement in its line spacing operation, and an overlying guide member thatcoacts with said'pawl to maintain it against accidental displacement off said regulating device without interfering with the return movement of said pawl independently of the wheel after each line spacing movement is effected, said guide member be ing carried by and adjustable with said regulating' device. 1

4. In a typewrit-ing machine, the combination of a line spacing wheel, a line spacing pawl, an adjustable line space regulating device on which said pawl normally rests and on which it has a sliding movement in its line spacing operation, an overlying arm that holds the pawl against accidental displacement from said re ulating device, a single spring, and means by which said spring tends to hold said regulating device in adjusted position and said arm in effective position.

5.111 a line space mechanism for typewriting or like machines the combination of a line spacing pawl, an adjustable spring-pressed line spacing regulating device on which the pawl normally rests and on which it has a sliding movement in its line spacing opera tion, a separate hand-controlled member coacting with said regulating device to control its adjustment, a pin, a. series of pin-engaging notches between said regulating device and hand controlled member, whereby an adjustment of the hand-controlled member will adjustthe regulating device to difierent line determining positions and the regulating device will act as a spring detent to hold the hand-controlled member against accidental displacement from the line determining position to which it may be adjusted, and an overlying arm that holds the pawl against accidental displacement from said regulating device.

6. In a line space mechanism for typewriting or like machines, the combination of a line spacing pawl, an adjustable spring-pressed line spacing regulating device on which the pawl normally rests and on which it has a sliding movement in its line spacing operation, a separate hand-controlled member coacting with said regulating device to control its adjustment, a pin, and a series of pin-engaging notches between said regulating device and hand-controlled member, whereby an adjustment of the hand-controlled member will adjust the regulating device to difierent line determining positions and the regulating device will act as a spring detent to hold the hand-controlled member against accidental displacement from the line determining posi .tion to which it may be adjusted, and a guide engaging notches between said regulating device and hand-controlled member, whereby an adjustment of the hand-controlled member will adjust the regulating device to dilierent line determining positions and the regulating device will act as a spring detent to hold the hand-controlled member against accidental displacement from the line determining position to which it may be adjusted, an overlying spring-pressed arm coacting with said pawl and exerting its spring force against the pawl to prevent an accidental displacement thereof from said regulating device, the

spring ofsaid arm also exerting its torceon said regulating device and causing it to act as a detent as stated. 1 v

8. Ina line space mechanism for typeyjvrit ing or like machines, the combination of a line spacing wheel, a line spacing pawl, a spring-pressed pivoted line space regulating devicecon which the pawl normally rests and hasa sliding movement in its line spacing operation, the position of the regulating device in turning on its pivot determining the point in the throw of the pawl where it engages the line spacing wheel, a separate hancbcontrolled memberpivoted to turn in an are at an angle to the are through which the pivoted regulat ing device turns and coacting with said regulating device to control its pivotal adjustment, the regulating device coacting with said hand-controlled member to operate as a spring detent to hold it against accidental displacement from the line spacing determining positions to which it may be adjusted, an arm pivoted on said regulating device and overlying said pawl to prevent an accidental displacement thereof from said regulating device, and a single spring connected to said arm and also exerting its force on the regulating device to cause it to act as a spring detent as stated.

9. In a typewriting or like machine, the

combination of a line spacing wheel, a piv-' oted line spacing pawl that extends longi tudinally in one direction'from its pivot, an overlapping pivoted line space regulating arm that extends from its pivot in the opposite direction and on'which the pawl slides combination of line spacing wheel, a line spacing pawl, a pivoted adjustable line space regulating arm on which said pawl normally rests and on which it has a sliding movement in its line spacing operation, a guard member comprising an angular lever pivoted to and adjustable with said regulating arm, one arm of said angular lever coacting with said pawl to prevent an accidental displacement thereof from said regulating arm, and a spring connected to the other arm of said angular lever and also exerting its force to hold the regulating arm in its adjusted position. Y

11. In a line space mechanism for typewriting or like machines, the combination of a line spacing pawl, an adjustable springpressed line spacing regulating device on which the pawl normally rests and has a sliding movement in its line spacing operation, a separate hand-controlled member coacting With said regulating device to control its adjustment, a pin, and a series of pin-engag ing notches between said regulating device and hand-controlled member, whereby an adjustment of the hand-controlled member will adjust the regulating device to different line determining positions and the regulating device will act as a spring detent to hold the hand controlled member against accidental displacement from the line determining position to which it may be adjusted, a guard member pivoted on said regulating device and coacting with said pawl to prevent an accidental displacement thereof from, the regulating device,and a spring connected to said guard device to hold it in effective position and also exerting its force to maintain an interlocking engagement between said pin and engaging notches.

12. In a typewriting or like machine, the a combination of a line spacing wheel, a detent roller cooperative with said wheel on the top thereof, a substantially horizontally disposed spring pressed carrier for said detent roller, said carrier being in the nature of a lever pivoted at one end and with a forwardly projecting substantially horizontally disposed armthereof carrying a cam, a line spacing pawl, a slide on which said pawl is mounted, a line spacing lever for moving said slide, and an abutment on said slide brought into en agement with said cam and overl Te ing said arm at the last part of each line spacing ope. etion to hold the carrier and tent roller against upward displacement away from the line spacing wheel and thereby prevent an overthrow thereof.

13. In a typewriting or'li'ke machine, the combination 'of a linespacing wheel, a detent roller therefor, a lever-like sheet metal carrierfor said detent roller, said carrier being pivoted at one end and substantially U,-shaped in cross-section at its body portion, a contractile spring connected-at one end to said carrier, adjustable means connected to the other end of said spring for varying the force of said spring on said carrier, a rigid extension on the carrier, a line spacing lever, an

engaging member connected with said line spacing lever and moved thereby at the last part of the line spacing operation into contact with the extension on the carrier to hold the detent roller in engagement with the line spacing wheel and thus prevent overthrow thereof.

14. In a typewriting or like machine, the combination of a line spacing wheel, a detent roller therefor, a lever-like detent roller carrier pivoted at one end and carrying said roller intermediate its ends, the free end portionof said lever-like carrier having an inclined contact face, a line spacing lever, and an engaging member controlled thereby and moved at the last part of the line spacing operation into engagement with said inclined face to hold the carrier and detent roller against releasing movement and thus prevent an overthrow of the line spacing wheel.

15. In a typewriting or like machine, the combination of a line spacing wheel, a detent roller bearing on the top thereof, a substantially horizontally disposed lever-like detent roller carrier pivoted at'its rear end and carrying said roller intermediate the ends thereof, the free forward end portion of said carrier having an inclined contact face, a line spacing lever, a slide movable fore and aft of the machine by said line spacing lever, a line spacing pawl carried by said slide, and an engaging member carried by said slide and cooperative at the last part of theline spacing operation with said inclined face to hold the carrier and detent roller against releasing movement and thus prevent an overthrow of the line spacing wheel.

16."In' a typewriting or like machine, the

combination of a line spacing wheel, a detent roller therefor, a sheet metal carrier for.

said roller substantiallyU-shaped in cross section and pivoted at one end and having one of its side, armsextended to provide an engageable arm at the free end of the carrier, the detent roller being pivoted on the carrier intermediate its ends and between the side arms thereof, a line spacing lever, and a contact device moved thereby at the last part of the line spacing operation into engagement with said engageable arm or the carrier to prevent a release attire oller other end of said spring is connected, and

a combined pivot and binding screw on which said arm is mounted, said sore holding said.

arn] in the different positions to which it may be adjusted around its pivot, to vary the force exerted by sand sprlng against sald carrier. S1g'ned at Mlddletown, in the county of Middlesex and State of Connecticut, thisQSth 7 day of February, A. D. 1927. c i v GEORGE G. GOING. 1

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