US1220390A - Cutting-machine. - Google Patents

Description

l. C. BACKERT.

CUTTINGMACHINE. APPLICATION FILED JULY 28.1916.

J. C. BACKERT.

Patented Mar. 27, 1917.

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CUTTING MACHINE.

APPVLlcATxoN man xuLY 28.1916.

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CUTTING MACHINE.

APPLICATION FILED IULY 28.1916.

LQSQI, I I Patented Mar.27,191.

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. lin a socket formed in 1. @IGEO JOHN C. BACKERT, 0F BROOKLYN, NEW YORK.

CUTTING-MACHINE.

`Specification of Letters Patent.

Patented Maa. at, iai a,

Application led July 28, 1916. Serial No. 111,793.

To all whom t may concern:

Be it known that I; JOHN C. BAOKERT, a citizen of the United States of America, residing at Brooklyn, Kings county, New York, have invented a new and useful Cutting-Machine, of which the following is a specification.

My invention relates particularly to machines for cutting printers rules and slugs, and some of the objects of the invention are to provide a simple, powerful mec-hanism for this purpose which can be readily set for cutting in different lengths or different angles.

Otherand more specific objects are to improve the work holding means, to enable the quick raising or lowering ofthe cutter for cutting through or undercutting the work, and to provide an adjustable driving connection between the motor and the cutter.

In the accomplishment of the foregoing and other objects, I mount the work holding gage on a slide which is movable toward and `away from the back rest for the work, said slide being freely movable to carry the gage up into engagement with the work and being then operated by a screw or cam to force the gage into gripping relation with the work.

The work holding gage is preferably pivotally mounted on thevslide, and means are provided for` preventing it coming into engagement with the cutter.

The back against which the workY rests is,

according to this invention, provided with a dependent pivot stud offset forwardly from the end thereof and pivotally engaged the work supporting table.

'The cutter is mounted on a bracket which can be breadily raised and lowered with respect to the table, and which forms, in the normal position of the parts, a closure to an opening formed in the top of a table.

The cutter is preferably driven by a motor which is connected to the cutter brackets .so as to move therewith and maintain the driving connections in proper relation in all positions ofthe cutter.

Various other features and details of construction will appear as the specification proceeds, attention being directed` to the accompanying drawings whereln I have' lllustrated the invention embodied in a practical and preferred form.

In said drawings:

Figure l is a side elevation o f a machine constructed in accordance with and embodying the invention.

Fig. 2 is a top plan view of the same, showmg in dotted lines the back swung around for cutting at an angle.

Fig. 3 is a detached bottom plan view of thework supporting table showing the gage adjusting mechanism.

Fig. 4 is across sectional view of the same taken substantially on the plane of the line 4 45, Fig. 3.

.Fig 5 is a fragmentary vertical sectional view of the cutter supporting bracket and associated parts taken substantially on the plane of the line 5 5, of Fig. 2.

Fig. 6 is a horizontal sectional view of the machine taken substantially on the plane of the line 6 6 of Fig. 1.

Fig. 7 is a detached perspective view of a straddle clamp7 for holding the work.

Fig. 8 is a broken sectional view taken substantially on the plane of the line 8 8, Fig. 2.

Fig. 9 is a perspective lview of certain parts.

The frame or base of the machine is made up, in the present illustration, of a pedestal 10, supporting a table 11. Mounted in suitable guides on the table 11 is a movable work sup orting table 12, said table adapted to carry t e work up to the cutterand being provided with a transversely extending back 13 against which the work 14 rests.

15 designates the cutter, the same preferably being in the nature of a milling cutter, 'such as that disclosed in my Patent #1,136,085, and constructed to trim the severedends ofthe material and thus leave finished surfaces at the ends of the pieces cut apart.

This cutter is mounted on a shaft 16 journaled in a bracket 17, said bracket being pivotally supported in the present instance at 18 at a point beneath and to one side of an' opening 19 in the table top, and being provided with a flat upper surface 20 providing in the normal position of the parts (Figs. 2

and 5) a closure to said opening in the table l handle 21 is shownprovided nfor swinging the cutter bracket on its pivotal sup for the purpose of raising cutter said handle having in this case, a segmental slot 22 therein through which passes the shank of a hand operated clamping bolt 23. This provides a ready means for hold# port and lowering the link connection 30.

shown as a pulley 25 'on the motor shaft, f

over which passes a belt 26 to a pulley 27 on the cutter shaft.

This driving connection is maintained at the proper tension and the motor is caused to follow the movements of the cutter by supporting the motor on an arm 28 which is pivoted on the machine frame at 29,' and connecting this motor supporting arm with the cutter supporting bracket by means of a ing the belt and pulley, and is shown connected at the upper end with the cutter bracket by means of a yoke 31 and connected at its lower end with the motor support by a pivot bolt 32. Adjustment for taking up the slack of the belt is provided by extending said pivot bolt through lug 34 on the motor supporting arm, said bolt being clamped at different points in said slot by a clamping nut 35 and having a freely pivoting'engagement at itsA outer end in the belt incasing` link, disengagement of said link from the pivot bolt being prevented by the nut 36.

From this, it will be seen that the cutter may be readily raised or lowered', and that the motor will freely follow the adjustments of the cutter, proper driving connections being maintained at all times.

The work on the table 12, which is relatively movable with respect to the cutter, is held against the back 13 by a gage 37, said gage being shown in Figs. 1 and 2 as a relatively thin member disposed parallel to the cutting plane, which is indicated by the line 38 at the edge of the movable table, and pivotally supported at its end farthest from the back by a pivot stud 39 disposed at a right angle to the cutting plane and rotatably engaged in a bearing socket 40 mounted on the slide' 41. This gage supporting slide 41 is engaged in a guide-way 42 in the top of the movable table, said slide being ordinarily free to permit of the gage belng brought freely up against the Work.

After the preliminary or rough adjustment of the gage with respect to the workagainst the back rest, the holding gage is set up into clamping engagement with the,

Work by means consisting in the present disclosure of a cam 43 carried by a control rod 44 and engaging a dog holding member 45 sleeved on said rod, saidI holding member having pivoted thereon at 46 a dog 47 adapted for engagement with a series of ratchet teeth 48- on the underside of the slide. -The dog holder 45 is held in proper engagement with the cam by means such This link connection is shown as a guard surrounding and protecti as the spring 49 and the spring 50 is shown yprovided for thrusting the dog outward into engagement with the ratchet teeth. The slide may be operating the same.

In operation: The work is placed up against the back 13 and the slide is then shifted to bring the end of the work hold- The control rod 44 is then turned, as by means of the hand wheels 52 on the ends of the same, the rotation thus imparted to the cam 43 serving to shift the dog carrier longitudinally or parallel with the slide. As soon as the dog moves far enough forward for the lug 53 thereon to become disengaged from the stop 54, the spring 50 thrusts the dog into engagement with thev ratchet teeth and thereafter the movement of the cam is effective in shifting the slide, and thus carrying the work holding gage into clamping engagement with thework. The stop 54 thus, when the dogcarrier is in the retracted position, serves to trip the dog from engagement with the ratchet, so that in this retracted position the `gage carrying slide can be freely moved back and forth, and even when the parts have been left in the position indicated `in Fig. 3, the slide can be freely advanced toward the work, be-

provided with a handle 51 for ing gage into engagement with the work. V

cause the spring ypressed dog will yield as 1 the ratchet travels forwardly.

An end gage 55 is usually provided for i gag-ing the length of the stock, said gage being slidably mounted on the back 13.

In order that .the work may be supported I at both sides of the cutter, an extension back 56 is preferably carried by the movabletable, said back being. disposed in line with the back 13 and a break or interruption 57 being provided between these two back mem-V bers in line with the cutter. An end gage 58 is usually provided on the extension back iio at both sides of the break in the back rest, v Y

said gage having holding portions 59 and 60 connected in spaced relation by an arch 6l so as to engage the stock at opposite sides of the cutting plane and straddle the cutter as the `work table is advanced.

To insure the properlateral positioning of this straddle gage with respect to the cutter, positioning means are preferably provided such as a dependent lug 62 on the gage working in a slot 63 in the tabletop. This prevents thel work holding gage getting i out of alinement -with respect to the cutter and at the same time allows for adjustment of the' gage with respect to the back. Y

The dierent kinds of work holding gages are made interchangeable by providoperated, in which case ing them each with a pivot stud 39 which can be slipped endwise into the bearing 40 on the slide 4l, and in order to temporarily lock the gage in said socket, I have shown o holding means in the form of a lug 64 onA each pivot stud 39, which, when the gage is turned up into an inoperative position, comes into the plane of a slot 65 in the bearing 40, permitting the pivot stud being shifted endwise until the lug passes out of the opposite end of the bearing whereupon the gage may be dropped down into operative position. This lug 64 is sol disposed as to limit the movement of the holding gage toward the cutter and prevent the gage be.- ing moved over far enough to strike the cutter. The gage, may, however, be freely moved in the opposite direction or away from the cutting plane, as will be evident in Fig. 2.

The motor is by preference, electrically the controlling switch 66 for the same may be conveniently located at the front of the machine beneath' the stationary table top. The motor is usually located at the rear side of the machine beneath the'projecting portion of the stationary table top. This arrangement provides a compact structurer taking up but very little room.

The pedestal l0 in the machine is usually of hollow construction and a chip receptacle 67 may be removably mounted in said hollow pedestal, said receptacle being supported by means of hooked lugs 68 bearing on supporting ledges 69 on the inside of the frame, and being withdrawable through the open side 70 of the pedestal.

The gages described are readily adjustable for various lengths of stock, and as an additional feature, the back 13 is preferably pivotally mounted so -that it-may be swung around into the desired position indicated in Fig. 2 for mitering purposes. This is accomplished in the illustration by providing said back with va dependent pivot lug 7l offset forwardly from the end of the back and engaging in a socket 7 2-in thermovable table. This hinge mounting is entirely out of the way so as not to interfere with the placing of the work, and allows for the easy setting of the back to the'requisite angle, said back being held at theproper point as by means of a holding pin 73 engaging in properly positionedm openings 7 4 in the movable table to pThe machine of my inventionwill be seen to be of simple, sturdy construction, and it will be evident that it is quickly adaptable to meet the various uses for which said machines are intended.

What I claim is:

l. In a machine of the character set forth, the combination of a cutter and a work supporting table relatively movable with re .engagement with the work provided with measurement indications and having a dependent pivot stud oset forwardly vfromthe plane of the working face of said-back rest and4 the table. v

2. In a machine of the character set forth, the combination of a relatively movable cutter and work supporting table, said table having a groove in the top thereof parallel to the cutting plane of the cutter, a back rest for the work on the table, a slide on the table movable toward and away from the back rest and a holding gage pivoted on said slide and provided with a lug adapted to drop into the groove in the table top whereby in the sliding movements of said slide the pivoted holding gage will be guided by engagement in the groove aforesaid.

3. In a machine of the character set forth, the combination of a relatively movable vcutter and work supporting table, a back rest for the work on said table, a slide mounted on the table and movable thereon toward and away from said back rest and a work holding member pivoted on said slide at a right angle tothe cutting plane of the cutter.

4. In a machine of the character set forth,

the combination of a relatively movable cutter and work supporting-table, a back restlv for the work on said table, a slide mounted on the table and movable thereon toward and away from said back rest and provided with a socket disposed atl aright angle to the l cutting plane of the cutter and a work holding gage disposed parallel to the cutting plane provided with a supporting stud pivotally engaged in said socket.

5. In a machine of the character set forth, the combination of a relatively movable cutter and work supporting table, a back rest for the work on said table, a slide mounted on the table'and movable thereon toward and away from said back rest and provided with a socket disposed at a right angle to the cutting plane of the cutter, a work holding gage disposed parallel to the cutting plane and provided with a supporting stud pivotally engaged in said socket and a vstop limiting the movement of said holding gage toward the cutting plane. 4

6. In a machine ofthe character set forth, the combination of a relatively movable cutter and work Asupporting table, a back rest for the work on said table, a slide mounted on the table and movable thereon toward and away 'from said back rest and provided with pivotally engaged in the socket in provided with a supporting stud pivotally engaged in said socket, said socket having a 'f slot in one side thereof anda pin on the pivot of the work holding gage engageable in said slot when the pivot stud is inserted endwise into the socket.

7. In a machine of the character set forth, relatively movable cutter and table elements, a supporting sleeve on said table, a stud pivotally engaged in said sleeve and longitudinally slidable therein, a work holding gage at the end of said stud nearest the cutterand anoutstanding lug on the opposite end of the pivot stud engaging the end of the supporting sleeve to limit the movement of the gage toward the cutter and said supporting sleeve having a longitudinal slot therein for the passage of said lug but offset from the plane of the lug when the gage is in operative position.

8. In a machine of the character set forth, the combination of a cutter, a table slidably mounted at one side of the cutting plane of said cutter, a back rest for the work carried by said table and provided with al break therein in line with the cutting plane, a gage mounted on the table in front of the back rest and provided with work engaging portions disposed on opposite sides of the cutting plane for engaging the work bearing against the back rest at opposite sides of the break therein, the table having a groove therein parallel with the cutting plane and said gage having a lug engaging in said groove for holding said gage against lateral shifting with respect to the cutter.

9. In a machine of the character set forth, the combination of a work supporting table, a back on said table, a slide movable on the table toward and away .from said back, a work holding gage carried by said slide for cooperation with said back, a series of ratchet teeth on said slide, a dog for engagement with said ratchet teeth and means for simultaneously shifting said dog toward the ratchet teeth and 'in a plane parallel to the plane of movement of the slide.

10. In a machine of the character set forth, the combination of a work supporting table, a back rest on said table, a slide movable on the table toward and away from said back rest, a work holding gage carried by said slide for cooperation with said back rest, a series of ratchet teeth on said slide, a dog engageable with the ratchet teeth and movable in a plane parallel to the movement of the slide, a cam for forcing said dog forwardly P in such plane of movement and means for tripping the dog from engagement with the ratchet teeth.

11. In a machine of the character set forth, a work supporting table, a back on said table,

' a slide on the table, a work holding gage carried by said slide for coperation with s aid back,` a series of ratchet lteeth on said slide,

a rotatable controlling rod, a cam on said rod having relatively high and low points, a dog holder sleeved on said rod, a spring holding said dog holder engaged with the cam, a dog pivoted on said holder, a spring for thrusting said dog toward the ratchet teeth and a stop-for lifting the dog out of engagement with the ratchet teeth.

12. In a machine of the character set forth, a work supporting table, a gage support slidably mounted on said table, a rotatable control rod mounted on the table parallel to the slide, a cam fixed on said rod, a dog holder bearing on said cam and movable in a plane parallel to the movement of the slide, a dog pivoted on said holder for engagement with the ratchet teeth and a stop for shifting said dog out of engagement with said ratchet teeth.'

13. In a machine of the character' set forth, a table having an opening therein, a bracket closing the opening in the table, pivoted below the table adjacent one edge of the opening therein and'provided with a flatupper surface to form a continuation of the table top, means for shifting said bracket on itspivot to carry the same into planes above and below the table top and a cutter shaft journaled in said bracket and movable therewith. Y

14. In a machine of the character set forth, a table having an opening therein, al

bracket closing the opening in the table, pivoted below the table adjacent one edge of the opening therein and provided with a flat upper surface to form a continuation of the table top, means for shifting said bracket on its pivot to carry the same into planes above and below the table top, a cutter shaft j ournaled in said bracket and movable therewith, a pivotally mounted motor support, a link connection between said mo- 'tor support and pivoted bracket, a motor on the motor support and driving connections from said motor to the cutter shaft.

15. In a machine of the character set forth, a table having an opening therein, a bracket closing the opening in the table pivoted below the table adjacent one edge of the opening therein and provided with a flat upper surface to form a continuation of the table top, a handle connected to said bracket and provided With a segmental slot therein, a clamp Working in said segmental slot and a cutter shaft journaled in the bracket and movable therewith.

16.V In a machine of the character se forth, a pivoted motor support, a motor mounted thereon, a` pivotally mounted swinging bracket, a cutter shaft journaled in said bracket, a link connection between 17. -In a machine of the character set forth, a pivoted motor support, a motor mounted thereon, a pivotally mounted swinging bracket, a cutter shaft journaled in said bracket, a link connection between said motor support and cutter shaft, belt connections from the motor to the cutter shaft and means for lregulating the link connection between the motor support and cutter shaft bracket to vary the tension on the belt connections. j

18. In a machine of the character set forth, a pivotally supported bracket, means for raising or lowering said bracket, a cutter shaft journaled in said bracket, a motor support suspended from said pivoted bracket, a motor carried on said motor support and driving connections from said motor to the cutter shaft.

19. In a machine of the character set forth, the combination of a work supporting table, a back rest on said table, a slide movable on the table toward and awayfrom said back rest and pawl and ratchet connections between said table and slide including a ratchet on one of said members, a dog on the other of said members, and means for engaging the dog and ratchet and for imparting a movement longitudinal of the slide.

20. In a machine of the character set forth, the combination of a work supporting table, a back rest on said table, a slide movable on the table toward and away from said back rest, pawl and ratchet connections between said table and slide including a ratchet on one of. said members and a dog on the other of said members, means for engaging the dog and ratchet and for imparting a movement longitudinal of the slide and means for tripping the dog and ratchet from engagement with each other.

21. In a machine of the character set I forth, the combination of a relatively movable cutter and work supporting table, a back rest on the table, a slide on the table movable in a plane parallel to the cutting plane of the cutter and a Work holding gage pivoted atone end to the slide and having at its opposite end substantially parallel portions adapted to engage at their ends the work resting against the back rest and arranged to straddle the cutter in the relative movements of the work supporting table and cutter. d

JOI-IN C. BACKERT.

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