US671870A - Button-making machine. - Google Patents

Description

No. 67|,870. Patented Apr. 9, |90I.

E. w.-s|LsBv. BUTTON MAKING MACHINE.

(Application led Apr. 14, 1900.) (No Model.)

me mams Pneus no, Pwaauro. wAsHmGYoN. n. c.

No. 67l,870. Patented Apr. 9, I90I. E. W. SILSBY.

BUTTON. MAKING MACHINE.

(Application med Apr.l 14', woo.) (No Model.)

5 Sheats--Sheetv 2.

f No. 67|,870. Patented Apr. 9, |90l.

E. W. SILSBY.

BUTTONl MAKING MACHINE.

(Application filed Apr. 14, 1900.) (N u M o d e I 5 Sheets-Sheet 3.

No. 67I,870. Patented Apr. 9, |90l.

E. w., SILSBY.

BuTToN MAKING MACHINE.

'Application meu Apr. 14, 1900.)

(lo Model.)

5 Sheets-Sheet 4.

'mz norms Varens on, vnmuwo.. wAsmNnfcm, D4 c.

Patented Apr. 9, 190|.

E W SILSBY BUTTUN MAKING MACHINE. (Application led Apr. 14, 1900.) (No Model.) 5 Shsets-'Sheet 5.

` the line ll ll on Fig. l0.

EUGENE W. SILSBY, OF LAGRANGE, ILLINOIS.

BUTTON-MAKING MACHINE.

SPECIFGATIN forming part of Letters Patent No. 671,870, dated April 9, 1901.

A'ppnoaion filed April 14, 19de.

To all whom, t nza/y concern:

Be it known that I, EUGENE W. SILsBY, a citizen of the United States, residing at Lagrange, county of Cook, State of Illinois, have invented certain new and useful Improvements in Button-Making Machines, of which the following is a specification, reference being had to the accompanying drawings, forming a part thereof.

This invention relates to the formation of the dies of a button-making machine for the purpose of accomplishing certain specific results and avoiding certain specific difficulties which are pointed out in the specification.

The invention consists of the details of construction of the dies and their operating parts, as set out in the claims.

In the drawings, Figure 1 is a front elevation of the upper portion of 4a press containing my improved dies and constituting, substantially, a button-making machine. Fig. 2 is a top plan view. Fig. 3 is a top plan of one of the lower dies. Fig. 4L is an axial section through the upper die and one of the cooperating lower dies, showing certain parts of the button in position for action bythe dies before the latter have advanced toward each other. Fig. 5 is a section in a plane at right angles to Fig. 4 through the same dies, showing them with the parts of the button between them after they have come into cooperation. Fig. 6 is a section through the upper die and the other coperating lower die at a certain stage in the action with parts of the button shown between the dies. Fig. 7 is a detail section of the same dies shown in Fig. 6 at a little later stage in the action. Fig. 8 is a detail showing a portion of the same dies, showing the concluding stage of the action before the dies separate. Fig. 9 is a fore and aft vertical section through the press frame and stand at the plane of the line 9 9 on Figs. l and 2, showing the dies and pedal mechanism in elevation' Fig. 10 is a plan of the pedal mechanism, the pitman being in section, section being made at the line 10 10 on Fig. 9. Fig. ll is a section at Fig. l2 is a detail section at the line l2 l2 on Fig. IO.

The first part ot' my present invention relates to the construction of the dies and their 'cooperatiouwith each other, and they may sehn No. 12,956. (No model.)

be used in any press bringing opposing dies l into cooperation.

The second part of myinvention relates to the pedal mechanism by which the press is operated.

The press `comprises a head X and a base Y and suitable means for causing the head to reciprocate toward and from the base, the means in the present instance consisting of rigid side bars X X next to the head X, eX- tending through the base Y and connected below the base by a cross-bar X2, to which there is connected suitable means for reciprocating the head. Upon these there is mounted a die-carrier Z, arranged to oscillate about its pivot s and having two compound dies M and N, which are both mounted in such position on the oscillating carrier Z that they Lmay be brought axially into line with the upper die P, which is secured to the reciprocating head X. Any suitable means may be employed to shift the carrier from the posit-ion in which the die M is axially in line with the die P to a position in which the die N is in such position.

I will now describe the construction of the dies and their mode of operation. The upper die P comprises the inner element A, which is rigidly attached to the head X, and an outer element B, in the form of a sleeve or collar, adapted to reciprocate longitudinally with respect to the fixed element A. Springs C C, coiled about check and guide rods CC, which connect the two elements A and B in such manner as to permit the reciprocation of the latter, as described, react between said two elements with a tendency to hold the reciprocating element at its lower limit. Lugs A' A from the upper margin of the element A aiord means for pivotal connection of the latches D D, one upon each side, each of said latches having a nose d, which is adapted to engage over a shoulder b, formed on the element B, extending upward, and by such engagement the said element B is held positively locked at the lower limit of its range of reciprocating movement in respect to the central element A. When thus locked, the two elements operate together as one rigid in the die. The lower die M comprises the central element E, which is rigidly attached to the oscillating carrier Z,

IOO

and an outer element inthe forni of a sleeve or carrier F, adapted to reciprocate longitudinally upon the central fixed element E and connected thereto by guide rods or bolts G, similar to the rods C of the upper die, around which are coiled springs G Gr', reacting between the two elements of the die M, tending to hold the outer element at its upper limit withv respect to the inner. The inner element E may be made with a central cavity, as illustrated, Whenever the particular form which is to be produced by the dies upon the element upon which they operate is not such as to require the die to be solid.

s represents the shell or body-disk of a button, and t represents the material with which the shell or body-disk is to be covered. The disk .s will be usually of-metal, and the disk t may be either of such material as celluloid or thin metal having an ornamented surface, produced by lithographing or otherwise, in either case being vmaterial suitable to be cupped or flanged and clenched about the margin of the body-disk s. The outer ele'- ment F of the die M has two rabbets f and f', the former designed to receive the iiange of the cupped disk s and the latter to receive the outer marginal portion of the plain disk t, such portion being designed to be folded to form a iiange clasping the flange of the disk s, as hereinafter shown. When the two elements s and 1f are in position in the lower die, as illustrated in Fig. 4E, the upper die being advanced, while its two members A and B are locked rigidly together by the latches D,

pressure of the element B of the upper die said outer marginal portion of the diskt is folded around the margin of the inner disk s, and by the time the two dies are brought together, as seen in Fig. 5, the Hanging or cupping of the outer disk t is completed, as shown in said Fig. 5, and when the upper die withdraws it carries with it both the disks s and t, the latter folded so as to embrace and inclose the former. The next process or the next step in the process of forming the button requires the reiiexing of the marginal portion of the ange t', which has been formed on the disk t, so that it. shall embrace the edge of the flange of the cupped disk s, and so that both disks shall be made to embrace and be taken firmly onto the back disk c, which is seen iu Fig. 6 lying in position in the lower die N. This lower die N comprises an inner element H, which is rigid with the carrier Z, and an outer element J, which is in the form of a sleeve or collar encompassing the inner element H and adapted to reciprocate longitudinally thereon. Springs K K are provided toV hold the outer element VJ at its upper limit with respect to the inner element H. These springs K are at their lower ends centered on hollow bosses vH I-I, which protrude upward from lugs h' h', projecting radially at the lower end of the central element H. At their upper ends these springs are stopped against flanges Z of plungers L, which at their lower ends extend through and are guided in the hollow bosses H and extend above their said flanges Z and protrude through and are guided in the lugs J', which project at diametrically opposite points from the upper margin of the outer element J of the die. The reaction of the springs is thus caused to operate upon said outer element through the medium of the plungers L, whose flanges Zbear against the und er side of the lugs J'. The back shell v,hav

ing been previously formed, as shown in Fig. 6, with the marginal concavo-convex boss or bead c, is provided with a suitable concave seat in the upper end of the inner element H and is adapted to lie entirely within the outer element J as it rests in said concave seat, as seen in Fig. 6. Said outer element has formed in its upper end a fillet or rabbetj, in which the lower edge of the flange t ofthe disk z5 is lodged or entered when the upper die P descends to coperate with said lower die N. The upper end of each of the plungers L is tapered or beveled, as seen at 2 in Fig. 6, and the outer upper side or corner of the lugs J is beveled, as seen atjz, and these bevels being in position to be encountered by the curved or sloping ends of the latches D D cause said latches to be swung outward as the die P descends and the noses d of said latches to be disengaged from the shoulders b of the outer element of said upper die P, that element is no longer positively locked, but is adapted to be forced upward with respect to the inner element. The springs which resist such upward movement of the outer element of the upper die are weaker than the springs K, which support the outer element of the lower die, and as soon, therefore, as the lower end of said outer element B of the upper die encounters the upper end of the outer element J of the lower die said element B is forced upward relatively to the inner element A, which carries downward the two IOO IIO

elements of the button and brings the lower edge of the ange t of the outer element t into the fillet j', whose curvature causes said edge ofthe fiange t to be reflexed inward over the edge ofthe ange of the shells, the condition and shape of the several parts at this stage of the action beingas seen at Fig. 6. At this point the shoulder and the sides of the nose d of the latches D encounters the upper end of the plunger L, and from this point during the farther descending movement of the upper die it will be seen that the springs K are compressed as fast as the upper die descends, so that they do not resist the descent of the outer element of the lower die, which therefore descends, together with the outer element of the upper die, the two elements carrying.

andt'in the position and form shown in Fig. 6, the inner element of the upper die also descending without change of relation to its outer element during this stage of the action, which continues until the inturned margin of the flange t', which being thus inturned, as seen in Fig. 6, projects over the upper edge or margin of the concavo-convex bead'v of the back shell t, and encountering said edge said iiange of the element tis hooked inward, clasping the edge of the cupped shell s, said margin of the back shell fu entering within the flange, formed of three thicknesses, as seen in Fig. 5, which represents the limit of this stage or portion of the process, the lower inner edge of the lletj' having reached and registering with the lower outer edge of the concave'seat formed in the upper end of the inner element h of the lower die. At this stage the lower end ofthe outer element J of the lower die has reached the stop-shoulder H3 on the inner element of said die and can descend no farther. The farther descent of the upper die causes its outer element P to be forced upward against the pressure of the springs C, so that the inner elements of the two dies continue to approach each other for a short distance, with the effect of flexing inward the flange or bead, which is composed of two thicknesses of the element t and one inclosed thickness of the element s, as seen in Figs. 7 and 8, causing said triple-layer bead to be clenched inward about the margin of the concavo-convex bead o and retaining the back shell securely connected to the other two elements s and t of the button. The importance of providing means for positively overcoming the resistance of the springs K K at the stage at which this is done by the encounter of the latches D with the upper end of the plungers Lis that otherwise the entire pressure necessary to force downward said outer element K from the stage shown in Fig. 6 to the stage shown in Fig. 7 would neces sarily be transmitted through the element s of the button, and this would cause the fianges of both elements to be bent fartherinward, and by the time the yielding of the outer element of the lower die had progressed far enough to bring the margin of the shell o into contact with the under side of the fiange of the covering z5 the edge of the ange of the front shells would be in line with the edge of the back shell, and the two edges would operate as the jaws of a pair of shears, cutting the flange of the celluloid covering ,destroying the button. Even if this should not always occur the pressure would tend to mash the celluloid and render it too thin for safety at the portion inclosing the periphery of the shell; but by causing the pressure of the springs to be positively overcome in the manner indicated the integrity of the outer element or covering t is preserved, while it is folded into the form desired, completely inclosing the shell s and being also, with lthe marginal portion of that shell, clenched about the back shell fu.

The second part of my invention relates to theu pedal and its connections, by which reciprocation of the press-head is produced. The cross-bar X3, which connects the draftbars X X, extending from the head through the base, is connected by a link or pitman X3 to,a short link or pair of links operating as one, X4, pivotally connected at :1:4 to a lug m5 on the base-plate X5, and to lugs' X30, which extend from the same base, there is pivoted the pedal-lever W. This lever comprises a flanged and bifurcated or slotted web W', which affords a seat for the pedal-beam or lever-arm W3, which may be of wood and is slotted or bifurcated to correspond with the web W. Upon each side of the web or bifurcation 1u a bracket-arm W3 of the lever extends down to the fulcrum of the lever in the lugs X30, as described. The pitman X3 extends through the slot or bifurcation of the pedal-lever, and on a bolt x30, which passes through it, are mounted on opposite sides of the pitman abutment-rolls X30 X30, which are overhung and acted upon by the bearing tracks or cams W30 W30, formed on the inner side of the bracket-arms W3 W3 of the pedallevers. In order to stay the bolt m30 and keep the abutments which are formed by the rollers X30 X30 on its ends in proper position, so that they shall both and equally experience the pressure of the cams W30 W30, I extend the plates X31 X31 from the two ends of the bolt m30 to the two ends of the bolt m40, by which the links X4 are connected to the pitman X3 at the end remote from their supporting-lug 003. Both bolts are thus stayed by each other.

` W4is a bifurcated bracket which is secured on the upper side of the beam w by the same bolts which secure the rear end of the pedallever W, the two arms of said bracket being connected at the rear by the web W40, at the upper end of which is a boss w40, interiorly threaded to receive an adjusting stopscrew W31, which stops against the pitman X3, and thereby limits the downward pull on the reciprocating member.

W5 is a spring connected to the base of the press-frame and to the rear end of the pedallever, tending to retract the latter and uplift the pedal to the position of rest.

For the purpose of restoring the press-head to its elevated position after the downstroke caused by the pedal mechanism I provide a cou nterweight Q on a lever-arm Q4, fulcru med at q on the hangers Cw', secured to the under side of the bed, (or table on which the hed rests,) a chain or other flexible connection Q2 being connected at 5030 to the crossbar X2 and to the lever-arm of the counterweight and extended intermediately over a sheave-pulley Q3, journaled on the pivot q, and which may be rigid with the lever-arm Q4. The manner in which the weight operates to retract the head will be obvious from Fig. 9.

The operation of the pedal mechanism is that when the pedal is depressed the cams IOO IIO

W80 W30, operating on the abutment-rolls X30 v X30, draw downward the link or pitman X3,

ends of the links X4, due to their being pivoted to the base below and forward of their connection to the pitman, both combine to cause the point at which the abutments bear on the pedal-lever to approach a position directly over the fulcrum of the lever and to cause the leverage favorable to the action of the pedal upon the press-head to increase, such increase being very rapid as t-he pedal approaches its lowest position. This makes it possible to obtain a comparatively wide range of movement, such as is frequently necessary in operating a press in order to cause the head and base to be separated at the position ofA rest sufficiently to accommodate the parts which are to be introduced between them, the first part of the movement, in which little or no work is being done, being rapid, while the latter part,at which the severe work is concentrated, is very slowand requires the maximum force or pressure to be exerted. Atthe lowest position of the pedal the point of bearing of the abutments X30 on the under side of the cams W30 is so nearly in a direct line between the lever-fulcrum at 005 and the connection of the pitman to the cross-head at :1:2 that the weight Q cannot start the parts away from that position because the Weight of the pedal-beam w and the pedal at the forward end of it has such an immense advantage of leverage operating downward on the pitman. To prevent the parts being locked at this position, I provide the spring W5, as described, operating `on the rear of the pedal, with a tendency to restore it to its upper position. This starts the return movement of the pedal, and the pitman XS being relieved of the weight of the pedal by this means the weight Q is adequate to restore the reciprocating head of the press and the parts connected with it, including the pitman X3 and link X4, to their position, as shown in Fig. 9.

I claimy l. In a die-operating press, two compound dies adapted to be approached and separated, having two elements, of which one is adapted to yield longitudinally with respect to the other back from the other die; a yielding resistance to such movement in each die, said resistance in the second die being greater than in the first, and means associated with the first die for counterbalancing the excess of resistance in the second die after partial approach and cooperation of the dies and before the yielding element of the first die reaches the limit of its yielding movement.

2. In a die-operating press, two compound dies adapted to be approached and. separated, having two elements, of which one is adapted to yield longitudinally with respect to the other back from the other die; a yielding resistance to such movement in each die, said resistance in the second die being greater than in the first, and means associated with the rst die for positively overcoming said resistance in the second die after partial approach and coperation of the dies, and before the yielding element of the first die reach-es the limit of its said yielding movement.

3. In a die-operating press, two compound dies adapted to be approached and separated, each having an inner andan outer element, of which the outer is adapted to yield longitudinally with respect to the inner back from the other die, a yielding resistance to such movement in each die, said resistance in the second die being greater than in the first, and means associated with the first die for counterbalancing the excess of resistance in the first die after partial approach and coperation of the dies, and before the yielding element of the first die reaches the limit of its said yielding movement.

- 4. In a die-operating press, two compound dies adapted to be approached and separated, each having two elements, one of which is adapted to yield longitudinally with respect to the other back from the other die; springs which yieldingly oppose such movement in the dies respectively; the spring in the second die being adapted to oifer greater resistance than the spring in the first die; and means associated with the first die for couliterbalancing the excess of resistance offered by the spring of the second die after the partial approach and cooperation of the two dies and before the yielding element of the first die reaches the limit of its yielding movement.

5. In a die-operating press, two compound dies adapted to be approached and separated, each having an inner and an outer element, of which the outer is adapted to yield longitudinally with respect to the inner back from the other die 5 springs in the two dies respectively which resist such movement, the spring in one die being weaker than that in the other; a plunger which transmits the resistance of the stronger spring to the moving element of the die to which it pertains; and means associated with the other die encountering such plunger and forcing the spring on which it acts after the partial approach and .coperation of the dies.

6. In a die-operating press, two compound dies adapted to be approached and separated, each having two elements, of which one is adapted to yield longitudinally with respect to the other, back from the other die; a yielding resistance to such movement in each die; said resistance in the second die being greater than that in the first; means associated with the first die for counterbalancing the excess of resistance in the second die, after partial IOO IIO

approach and coperation of the dies, before the yielding element ot' the tirst die reaches the limit oi' its yielding movement; and a stop, which positively limits the yielding movement of the yielding element of the second die, after the encounter of the yielding elements of the two dies.

7. In a die-operating press, two compound dies adapted to be approached and separated, each having an inner and an outer element, ot' which the outer is adapted to yield longitudinally with respect to the inner back from the other die 5 springs in the dies respectively which resist such movement, the spring of the second die offering greater resistance than that of the first; means associated with the rst die for counterbalancing the excess of resistance of the stronger spring in the second die after the coperation of the two dies to the point at which their yielding elements encounter each other, and before the yielding element of the first die reaches the limit of its yielding movement; and a stop which positively limits the yielding movement of the yielding element of the second die, after a period of simultaneous movement of said two elements following their encounter.

8. In a die-operating press, two compound dies adapted to be approached and separated, each having an inner and an outer element, of which the outer is adapted to yield longitudinally with respect to the inner back from the other die; a yielding resistance to such movement in each die, said resistance in the second die being greater than in the first, and means coming into operation after partial approach and coperation of the dies, and before the outer element of the first die reaches the limit of its yielding movement, causing their outer elements, and the inner element of the first die, to maintain unchanged relation to e'ach other during the subsequent change in relation of the elements of the second die; and a stop which is later encountered by the outer element of the second die, terminating its movement, causing the outer elements of both dies and the inner element of the second die to thereafter maintain unchanged relation while the inner element of the first die continues to advance.

9. In a die-operating press, two compound dies adapted to be approached and separated, each having an inner and an outer element of which the outer is adapted to yield longitudinally with respect to the inner back from the other die; springs which resist such movements in the dies respectively, the spring in one die offering greater resistance than that in the other; a plunger which transmits the Y stop which limits positively the movement of the moving element of the die having the stronger spring after aperiod of simultaneous movement of the moving elements of the two dies.

l0. In combination with the upper die, having a fixed inner and a movable outer element, and adapted to receive within the outer element the button shell and covering, the lower die, having inner and outer elements, the former fixed and the latter movable, said latter/ element projecting at its inner margin inward beyond the corresponding margin of the other die, and having, in such projecting portion, a fillet, j; springs which resist the movement of the outer ele ments in respect to the inner elements of such dies respectively, the spring in the upper die being weaker than that in the lower, whereby, as the dies approach, the fillet, j, folds inward the margin of the flange of the button-covering; means associated with the upper die for overcoming the excess of resista-nce of the lower die, arranged to come into operation aft-er the two moving elements of the dies have encountered each other, and before the outer element of the upper die reaches the limit of its yielding movement; whereby both elements of the upper die, and the moving element of the lower die move substantially together from that point, and the outer element of the upper die, has still a further range of yielding movement after such simultaneous movement of said parts.

11. In combination with the upper die, havinga fixed inner and a movable outer element, and adapted to receive within the outer element the button shell and covering, the lower die, having innerand outer elements, the former iixed and the latter movable, said latter element projecting at its inner margin inward beyond the corresponding margin of the other die and having in such projecting portion a fillet, j; springs which resist the movement of the outer elements in respect to the inner elements of such dies respectively, the spring in the upper die being weaker than that in the lower, whereby as the dies approach the llet j tends to fold inward the margin of the fiange of the button-covering; means associated with the upper die to overcome the egzcess of resistance of the spring of the lower die, arranged to come into operation after the two moving elements of the dies have encountered each other and before the moving element of the upper die reaches the limit of its yielding movement; a stop which arrests positively the movement of the outer element of the lower die before the end of the descending movement of the upper die, whereby the closing portion of said descending movement causes the inner element of the upper die to IOO descend with respect to the outer,and clenches the fold of the cover element of the button and the flange of the shell which it clasps, over onto the back shell.

12. In a press,in combination with the frame and the endwise-reciprocating member guided therein, a pitman, pivoted at the upl, per end to the reciprocating member; a-link having one end supported at a pivot, and the other end pivotally connected to the pitman and inclined down forward between such pivotal connections; whereby the pitmanconnected end of the link moves rearward and carries that end of the pitman rearward as the latter descends; and a pedal-lever fulcrumed behind the pitman, the latter having an abutment which the lever overhangs and on which it bears as it descends, at the forward end.

13. In a press, in combination with the frame and the reciprocating member guided in the frame, a link or pitman, connected at one end with the reciprocating member and a pivoted link which guides the pitman at the other end, such link being inclined down forward from its connection with the pitman t-o its own pivot; a pedal-lever fulcrumed near the vertical right and left plane of the pivotal connection of the pitman to the reciprocating member, the pitman having an abutment near the pivot of the link thereto, and the pedallever havin ga bearing-track overhanging and operating on said abutment, whereby the depression of the pedal-lever causes the point of bearing of the abutment thereon to approach the vertical right and left plane of the pedal-fulcrum, and increases the leverage of `the pedal on the reciprocating member.

14. In a press, in combination withthe frame andthe reciprocating member guided in the frame, a link or pitman connected at one end with the reciprocatingmember; a pivoted link which guides the pitman at the other end, such link being inclined down forward from its ,connection with the pitman to its own pivot; a pedal-lever fulcru med near the vertical right and left plane of the pivotal connection of the pitman with the reciprocating member, such pedal-lever being slotted or bifur'cated' to stride the pit-man, the latter having abutments on opposite sides and the pedalelever having bearing-tracks at opposite sides of its slot or bifurcation, over-hanging and operating on said' abutments respec- `tively.

15. In a press, in combination with the frame and the reciprocating member guided in the frame, a link or pitman connected at one end with the reciprocating member; a pivoted link which guides the pitman at the other end, such link being inclined down forward from its connection with the pitman to its own pivot; a pedal-lever fulcrumed near the vertical right and left plane of the pivotal connection of the pitman with the reciprocating member, such pedal-lever being slotted or bifurcated to stride the pit-man; a bolt eX- tending through the pitman, and abutmentrolls on the bolt at opposite sides of the pitman, the pedal-lever having bearing-tracks at opposite sides of the bifurcation overhanging and operating on said abutment-rolls respectively, and the stays or braces, X31 X31, connecting the corresponding ends of the abutment-rolls and the link-pivots.

. 16. In a press, in combination with the frame,the reciprocating member guided thereon; a pulley or sheave mounted on the frame, having a remotely-weighted arm; and a fiexible draft connection from the lever-arm, passing over the sheave, through the reciprocating member and attached to the latter at a point below the sheave.

17. In a press, in combination with vthe frame, the reciprocating member suitably guided therein, and means connected with said reciprocating member to uplift and uphold the same in the frame, a pedal-lever, a pitman connected to the reciprocating member and having an abutment on which the pedal-lever acts as the lever is reciprocated to draw down the reciprocating member; means by which the point of bearing ot' the abutment on the lever approaches the direct line between the lever-fulcrum and the pivotal connection of the pitman to the reciprocating member as the pedal descends; and a spring attached to the frame and to the pedal-lever, tending to retract the latter from the abutment.

18. In a press, in combination with the frame and the reciprocating member, a pedallever, a pitm an connected to the reciprocating member, and having abutments upon which the pedal-lever bears to draw down the reciprocating member; means by which the pitman is forced toward the direct line between the pedal-fulcrum andthe pivotal connection of the pitman with the reciprocating member as the pedal descends; the pedal-lever having a tailpiece provided with adjustable abutments adapted to collide with the pitman to arrest the descending movement of the pedal and the resultant movement of the pitman.

In testimony whereof I have hereunto set my hand, in the presence ot` two witnesses, at Chicago, Illinois, this 2d day of April, A. D. 1900.

E. W, SILSBY.

IOO

Images