US296496A - Hoop pointing and lapping machine - Google Patents

Description

(N0 Model.)

` 3 Sheets,Sheet7 l. L. WILSON. HOOP PINIHTGl AND LAPING MACHINE.

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(No Model.) I 3 Sheets-Sheet 2.

` F. L. WLSON.

H001J POINTING AND LAPPING MACHINE.

No. 296,496. Patented Apr. 8, 1884.

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(No Mode.) f 3 Sheets-Sheet 3.

P. L. WILSON.

HOOP POINTING AND LAPP-ING MACHINE.

No. 296,496. Patented Apr. a, 1884.'

Vperspective of the lapping devices. Fig. 8 is llnrrnn 1 S'rnrns HOOP POINTING AND SPECIFICATION forming part of Letters LAPPING MACHINE.

Patent No. 296,496, dated April 8, 1884.

Application filed December 12, 1893. (No model.)

To :53 whom t may concern:

Beit known that I, FITZLAND L. WILSON, of West Bay City, in the county of Bay and State of Michigan, have inventedl new and useful Improvements in Hoop Pointing and Lapping Machines; and I do hereby declare that the following is a full7 clear, and exact description thereof, reference being had to the accompanying drawings, which form a part of this speoiiication.

This invention relatesto animprovement in hoop pointing and lapping machines; and the invention consists in the construction and arrangement of the different parts, all as hereinafter described, and specifically/,pointed out in the claims.

In the drawings which accompany this specification, Figure l is a plan of the machine. Fig. 2 is a vertical section thereof on line X, and looking toward the rear ofthe machine. 3 lisa vertical sectionon line Y Y in Fig. l, looking toward the front of the machine. Fig. 4 is a cross-section of the machine online Z Z in Fig. l. Fig. 5 is a detached sectional perspective of the pointing device. Fig. (i is a diagram perspective, showing the hoop feeding and. pointing device detached from the frame. Fig. 7 is a diagram a detached perspective of one of the cutterheads for lapping the hoops.

A is frame suitably constructed to support all the operating parts in their proper relative position to each other. This frame is provided at a suitable height above the floor with a number of cross-gifts, c c, (see Figs. 2` and 7,) which form a horizontal bed or table, over which the hops to be operated upon are carried from front to rear by the racks or carrier-bars B B, which are constructed and operated as follows, (see Fig. 6:)

b are ledges formed upon the carrier-bars B at equal distances apart.

c c are cross-heads, to which the carrierbars B are secured and d are two parallel guiderods, upon each of which two ot' the crossheads c c are sleeved. f

fis a connecting-rod, which connects the two front cross-heads, c; and f is a similar rod con` necting the two rear cross-heads, c. Thus the carrier-bars B formwith the connectingbars f f', a rectangular frame or carriage, which is adapted to slide back and forth upon the guiderods d.

C C are two shafts, the former journaled at the front side and the latter at the rear side of the machine.

D Dare cams, all of the same size andshape. The cams D are secured upon the shaft C, and the cams D upon the shaft C.

'-e e are friction-wheels journaled in suitable boxes, which latter are secured near the ends ofthe guide-rods d. The friction-Wheels e rest on top of the cams D, and the friction- Wheels c rest on top of the cams D.

E is au eccentric placed uponathe shaft C.

g are two rods connecting the eccentric E with the bar f of the quadrilateral frame by the hinged connections 71.

In the opera-tion of the machine the shafts C C' are driven (by connections hereinafter described) at equal speed. This produces, by-

means ofthe cams D D', an alternating raising and lowering of the carrier-bars B B, while the action of the eccentric E produces at the same time a to-and-fro motion of the carrierbars, the combined action giving a socalled four-motion feed.

`As will be seen from the drawings, the carrier-bars B B are placed in the plane of the bed formed by the cross-girts a of the frame in such manner that they alternately rise above or drop below said bed, while the to-andfro motion of these carrier-bars is so timed that if hoops are laid upon the bed they are engaged by the ledges b of the carrier-bars, and will be carried from' front to rear step by by step, each step representing the distance between any two succeeding ledges b upon these carrier-bars.

ln the operation of the machine anumber of the hoops to be operated upon are placed, one on top of the other, between the upright guides z', which are secured at the front end ofthe bed of the machine, and by the action of the carrier-bars the hoops will then be Withdrawn one by one from the bottom of the pile, and carried ystep by step over the table of themachine, and it is during such passage that the operations of pointing and lapping are carried out. The guide-rods d, by which the carrier-bars are guided in their action, must IOO be free to rise and fall, and they are therefore placed loosely in the frame; but they are estopped from end motion by letting them abut against the ends of the frame or other vertical stops'placed'in proper position. The friction-wheels e e are held in contact upon the cams D D by the weight of the parts they support; but to prevent any momentary loss of contact when the machine is running at a comparatively high speed, strong leaf-springs F or equivalent devices are employedto supplement by their tension the action of gravity to hold the friction-wheels e c in engagement upon the cams D D.

The pointing device (see Figs. 2, 5, and 6) is constructed and arranged as follows:

G is a V-shaped block secured in a station- I ary position, with its top face in the plane of the table formed by the cross-girts a.

G is a V-shaped knife secured to the end of the lever H, which is pivoted at 7c to the frame, and passes near its opposite end through a yoke, Z, which serves as a guide for the lever H.

I is a link connecting the free end of the lever H with one arm of a bell-crank lever, J.

K is a pitman pivotally connected to the bell-crank lever J.

L is an eccentric secured upon the'shaft C and actuating thelpitnian K. y

Gis a pressure-foot of corresponding shape with the block G, and secured the required distance above the same to allow the hoops to pass between.

M M are pressure-bars, two or more in number. They are placed over some of the cross-girts a, and their front ends are secured the requisite distance above the same, so as to allow the hoops to be enteredv underneath, while their rear ends are free to rest upon the hoops, and thereby prevent them from buckling.

The pointing device operates as follows: As above described, the hoop-blanks inserted between the uprights z' i are carried over the top of the cross-girts a by the carrier-bars B B, whose motion advances the hoops step .by step, with an interval of time between each. step, when the hoops are at rest. Now, the block G is so placed that one end of a hoop, while at rest, will just cover the block, and the motion of the knife G is so timed that it descends and raises again during the `interval ofV time the hoops are at rest. The cuttingedges of the V-shaped knife G just overlap the edges of the'block G sufficiently all around to enable the knife to properly cut off all of the hoop-blank projecting over the edges of the `block G, thus giving to the hoop a pointed end. The pressure-foot G frees the pointed end of the hoop from the knife when the latter is withdrawing. In this manner all the hoops are pointed in succession as they pass over the block G. Y

To present the ends of the hoops uniformly upon the block G for the action of the pointing-knife, the hoop -blanks placed between the uprights fi i are placed with one end against the stop i', which is so placed that just enough of the end of each hoop is presented to the action of the knife to form the desired pointing.

It will readily be seen that my pointing device cuts after the principle of a pair of scissors, which, as is well known, will require less power to cut than a knife operating at right angles to the plane of cutting, and to produce a still more drawing cut Iincline the edges of the knife, as showninthe drawings. Another advantage of lmy construction is that the knife is freed more readily from the pointed end of the hoop. v

The devices for cutting and lapping each hoop are'constructed and arranged as follows:

a a are transverse girts secured the necessary distance above the cross-girts a, so as not to interfere with the free travel of the hoops over said cross-girts.

M is a rock-shaft journaled across the transverse girts a.

m is a rocker arm secured to the front end of the rocker-shaft M.

u n are other rocker-arms, secured upon the same shaft, M.

N N are two carriages adapted to be reciprocated in suitable guides, o o', which are adjustably secured to the transverse girts a. The guides o o are inclined, as shown in the drawings, and their adjustment admits of changing the amount of that inclination within a desirable limit by means of set-screws or otherwise. Each of the carriagesNN has journale'd upon it an arbor, pp, upon which cutterheads, O O', and pulleys q q are respectively secured. The cutter-head O is provided with two planer-knives of the usual description; but the cutter-head O has two planer-knives, P, which haveindented cutting-edges, as shown in Fig. 8, and the indentations of one knife alternate with the indentations of the other knife. The carriage N has another pulley, q, journaled upon it, and a spring pressure-foot, Q, is secured to itin such manner that it reaches with its free end under the carriage, as shown in Fig. 3. Each of the carriages N N is connected by links r r with the rocker-arms n and n', respectively, and these links are provided with suitable devices for lengthening or short-` ening them within certain limits. The rockerarm m upon the end of the shaft M is connected by a link, m', with one arm of the bell-crank lever J, and this link is also provided with devices for lengthening or shortening it.

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R is a belt passing under the pulley g and are stationary upon the table.

end enga-ges upon a cam, T, secured upon the shaft C. It is also provided with two up- Wardly-projecting studs, s s.

S is a resistance plate or bar adj ustably secured tothe frame of the machine above the bar S. Y

The operation of this clamping device is as follows: The action of the cam T upon the clamping-bar S produces an alternate raising and lowering of said bar, andv this motion is so timed that the interval in which said bar is raised corresponds with the interval during which the hoop-blanks, passing over the top of the cross-girts a, are also at rest, and the studs s s, being secured in proper position upon the bar S, and also of proper length, are adapted to rmly clamp two of thehoop-blanks against the plate S. The object of this clamping is to hold the two hoops which are operated upon by the lapping devices against end- Wise displacement.

The operation of the lapping device is as follows: The cutter-heads Oand O are rotated by means of the belt R, and the carriages N and N are reciprocated by means of the rockarms a n', which derive their motion, by means of the-connections described, from the bellcrank lever J, which in turn is actuated by the eccentric Lnpon the shaft C. The cutterheads O O are secured in such position upon the carriages N Nth'at the cutter-knives are adapted to operate in the desired manner upon the ends of the hoop-blanks wheneverthe carriages are pushed outwardly, and said motion is so timed that it corresponds with the interval of time during which the hoop-blanks ofthe lap will depend upon the degree of inclination of the inclined guides o o and their height above the table upon which the hoopblanks travel, the necessary adjustability is given to these guides.` The cutter-heads O O' do not act simultaneously upon the same hoopblank. The cutter-head O acts first in lapping that end of the hoop-blank which has been pointed, and as it is customary to cut but a short lap on that end, thecarriage N is more inclinedthan the carriage N. As the hoopblanks generally vary a little in length, provision has to be made to present the ends of the samein proper position to the action of the cutter-head O', as any irregularity in length Will appear upon lthe end presented to this cutter-head, and this is done by the following device, (see Fig. 3:)

U is a vibrating arm pivotally secured with its lower end tothe frame A.

V is a rod pir-'otallyconnected at one end With the vibrating arm U and at the other end with an arm, NV, which Iis secured to the carriage N. It will be seen that 4the reciprocation of the carriage N vibrates :the arm U, which is so placed that its upperend acts like a buting device upon the end of that hoopblank which is presentlyto be submittedto the action of the cutter-head O, andwhich As the length v has already been pointed and lapped upon its other end. The arm U has a sufficient degree of vibration lto adjust all the hoop -blanks whose length is within the ordinary rangeof 7o variation .from the standard length to which the machine is adj usted, bringing the butt-end of each inA the required position for being lapped properly by the cutter-head O. The

spring pressure-foot Q holds the butt-end of the hoop-blank firmly down upon the bed Q' appearance; but I have succeeded in over-` coming this` difficulty by the use of planerlrnives with indented cutting-edges, as shown, with the indentation of one knife alternating with theindentation upon the other or succeeding knife. The knives l use on the cutter-head O are provided with the usual cutting-edge only, as the lap upon the pointed end of the hoop is so short that the ordinary planer-knife will do.

Now, all that remains to be described is the manner in which motion is communicated to my machine.

u is the main drive-pulley, secured upon the shaft 0, `which is journaled to one end of the frame; and 10 is another pulley, secured upon the same shaft.

v o is a shaft journaled in the frame upon the opposite end of the machine, and w is a pulley sleeved upon this shaft. The belt R passes over the two pulleys 'w w', and communicates its motion to the cntter-lieads O O by Ameans of the pulleys Q q', journaled upon the carriagesNN,which latter draw apart Whenever the cutter-heads are to operate, thus producing the tightening of the belt R at the proper time.

To the loose pulley w is secured a taperpulley, w.

. nrowis ataper sleeve feathered upon the shaft o', and adapted to be engaged with or disengaged from the taper pulley to by its engage` ment with t-he rock-shaft x, Which can be ,operated at the front side of the machine by means of the shipping-lever x. y y are bevel-'pinions upon the shaft u', en-l gaging with bevel-gears z z upon the shafts C and C', respectively.

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As all the-motion of the operating of the machine is derived from the shafts C C, the shipping of the lever fc" throws the machine in or out of operation.

`What I claim as my invention isd 1. In a hoop pointing and lapping machine, and in combination With the table upon which lthe hoop-blanks are supported, two or more carrier-bars extending across the table of the machine, and provided with racks or retaining-ledges to engage with the hoop-blanks, in combination with'devices for imparting afour 5 motion feed to said carriers,whereby the hoopblanks are carried intermittently over the table from front to rear, substantiallyas and for the purposes described.

2. In combination with the stationary table 1o of the machine, and the pressure-bars lVI, se-

cured above said tab.le,'a carriage operating in the pla-ne of said table, and actuated ,by mechanical devices which give it ato-and-fro and up-and-down motion, whereby the racks or carrier-bars B B, which are secured to or form the ends of said carriage, form a feeding device by which the hoop-blanks are intermittently carried over the table from front to rear, substantially as and for the purpose described.

3. In ahoop pointing and lapping device, the combination of the feed-carriage with an eccentric, E, which imparts a to-andfro motion thereto, and with the cams D D `D D', upon which the four corners of the carriage are supported, and which impart an up-anddown motion to said carriage, substantially as and for the purpose specified.

4. -In a hoop pointing and lapping machine, the combination of the carrier-bars BB, crossheads c c', attached to the under sides of said bars, guide-bars d,passing through said heads, transverse bars f f', connecting the crossheads c and c', respectively, eccentric E, for impartinga reciprocating motion to the said carrier-bars B, rods g g, connecting the eccentric to the bar f, friction-rollers e c', lattached to the outer ends ofthe guide-bars cl, and cams D D', engaging with the rollers and constructed to give a vertically-reciprocating motion to the said bars B, substantially as and for the purpose specified.

5. In a hoop pointing and lappingmachine, the combination of the carrier-bars B B, constructed to have a rising-and-falling and toand-fro motion,with the guides i z', secured to the front end of the table of the machine, whereby the hoop-blanks formed in a pile between these guides may be withdrawn therefrom by the carrier-bars one by one and carried over the table, substantially as described. 6. In ahoop pointing and lapping machine,

am lapping device consisting of two reciprosaid arm, and arm W, attached to the .rod V a carriage reciprocatingly actuated by suitable devices between inclined guides adjustably secured above the table over which the hoopblanks are carried, in combination with a re- 7o volving cutter-head. secured upon said carriage, and the spring pressure-foot Q, substantially as and for the; purposes described.

9. ,A clamping device adapted to preventy the hoop-blanks from being pulled endwise while operated upon by V.the lapping device, consisting-of the bar S, pivotally secured at its rear end to the main frame, and provided with thefstuds s, in combination with a resistance-plate, S', adj ustably secured to the main frame, and means, as T, whereby said clamping device is operated, .substantially as described.

10.-Ihe vclamping device designed to prevent the loops from lbeing pulled endwise byl 8 5 the action ofthe cutter-kniveswhich perform the lapping, the same consisting of the bar S, pivotedat one end to the frame below the table, and engaging with its free end upona cam whichintermittently lifts the bar, and thereby presses lone .or more hoop-blanks between it and the stationary .pressure bar or plate S', secured above the table, substantially as described.

1l. Ina machine for pointing-and lapping 95 hoops, and in combination'with the two carriages, N N, provided with vcutter-heads O O, pulleys q and q', journaled `upon the same, and the belt It, passing over said pulleys and communicating motion thereto,devices for operating the two carriages simultaneously, so that the belt is tightened when the cutter-heads are invoperation, substantially as described.

12. The combination of the carriages N N', bearing revolving cutter-heads O O', with the rock-shaft M, rocker-arms n m secured to the shaft M, and links#n r', joining said arms .with the carriages,.substantiallyas set forth.

13. In combination with two lapping devices arrangedto operate successively one on each end of a hoop-blank, a butting device constructed to push the ends of the hoops to be lapped, varying sin length, to a regulated' distance `from the cutter-head, substantially as and for the purposespecied.

.14. In a machine for .pointing and lapping hoops, the butting device herein described, consisting ofthe vibrating arm U, vpivotally attached tothezmain frame, rod V ,attached to IOO 12o and to the carriage N, .substantially aszand for the purpose specified. A

, l5. In a machine Afor-pointing and `lapping hoops, vand in combination with the feedingcarriage thereof, mounted on cams secured to shafts() C', located atv the front and rear of the machine, respectively, and lderiving `its motion from an eccentric on one of the said shafts, and the lapping devices', means forimparting motion to the said-shaftsiand lapping devices, 13o consisting iof 1 the bevel-gearsfz, secured to the outeren dsof said ShaftsbeVcl-pinions yf, mesha table upon which the hoop-blanks are snpy 296 49s l e ing with said gear, shaft o. carrying the said pinion on its opposite ends, taper sleeve wg, feathered to the shaft y', pulley w', loosely mounted on the shaft n', and provided with the taper projection w, to engage with the taper sleeve w, belt l imparting motion to the pulley w', rock-shai`t x', engaging with the sleeve w3, and shipping-lever x2, attached to the shaft fr', all constructed and operating substantially as and for the purposes specified.

16. In a machine for pointing and lapping hoops, the combination of the following parts:

ported, a carriage constructed to have a rising-and-falling and to-a-nd-ro motion, which carries the hoop-blanks intermittently from front to rear, taking them one by one from the bottom of a pile of hoop-blanks placed l FITZLAND L. WILSON.

Witnesses H. S. SPRAGUIJ, E. SOULLY.

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