US252369A - Leather-dressing machine - Google Patents

Description

(No Model.) 4-Sheets-Sheet 1.

W. GOODMAN. LEATHER DRESSING MACHINE.

No. 252,369. Patented Jan'. 17,188Z.

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V w. GOODMAN. LEATHER DRESSING MACHINE.

oi. 252,369. Patentedm 111982.

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W. GOODMAN.

LEATHER DRESSING MACHINE;

N0. 252,369. Patented Jan. 17,1882.

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- w. GOODMAN. LEATHER DRESSING MACHINE.

Patented Jan. 17,1882

1W W m w m (III/1 Ill II N PETERS. Pnemmm har. Washington. D, c.

UNITED STATES" PATENT i OFFICE.

WILLIAM GOODMAN, OFBOSTON, MASSACHUSETTS.

LEATHER-DRESSING MACHINE.

SPECIFICATION forming part' of Letters Patent No. 252,369, dated January 17, 1882.

Application filed July 18, 1881, (No model.)

.To all whom it may concern Be itknown that I, WILLIAM GOODMAN, a subject of Great Britain, residing at Boston, in the county 'of Suffolk and State of Massachusetts, have invented certain new and useful Improvements in Leather-Dressin g Machines; and I do hereby declare the following to bea full, clear, and exact description of the invention, such as willenable others skilled in the art towhich it appertains to make and use the same, reference being had to the accompany- .jng drawings, and to letters or figures of 5 reference marked thereon, which form a part of This invention is an improvement upon a class of machines shown and described in LettersPatentof the United States issued to myself on the 3d day of May, 1881, for improvements in machinery for dressing leather, the novel features in which consist in a skin-supporting table adapted to. travel to. and fro on o 3 mechanism for raising and lowering bodily the tool-carriage and its adjuncts foretfecting the tI-aNGI'SESOf such carriage and its adjuncts lat-1 erally of the'table, for raising and depressing I end viewof same.

suitable guides in a horizontal plane,'and the combination,with such table, of dressing-tools connected adjustably with carriers which are "mounted upon and-traverse horizontal bars disposed in a suitable carriage above the table, the carriage, carrier, and tools being adjusta. ble transversely of and vertically with respect to said table. t

My present improvements relate to details of the dressing-tools in their carrier, and for shipping the belt fromone to the other of the two, pulleys which effect the verticalmovement: of

the tool-carriage. y The drawings accom'pnnyingthis specification represent, in Figure 1, an end elevation Fig. 2, a side elevation of a machine embodying my improvements; Fig. 3, a sectional elevation of the clutch-mechanism for [Loving the carriage across the line of travel of the table. Fig. 4 is a plan of the machine, while Fig.5 represents an elevation of the tool carriage.

.Fig. 6 is a plan of said carriage; Fig. 7, a top view, and Fig.8 a vertical longitudinal section, of the tool-stock. 'Fig. 9 is-a longitudinal section through the tool, and Fig. 10 an Fig. 11 is a vertical section in plane a b ofFig. 1.

rails G O, erected upon the floor orfoundation,

of the apartment in which the machine is situated, these beams constituting the ways or guides which give direction to the reciprocat ing traverses of the table.

To effect the requisite reciprocatin gtraversos of the table to and fro of the ways 0 Cl, Iadd to the under side of such table, and longitudinally thereof, atoothed rack, D, and meshing with this rack Iemploy a drivinggear, E, which I aflix to a 'horizontalshaft, F,disposed below the table at right angles to its path of movement, and mounted in suitable bearings in the rails or beams O C, before named, this shaft F being in turn rotated by a bevel-gear, Gr, affixed to one end of it outside of the adjacent beam, 0.

Operating with the gear G, I employ two conical ljevel'gears, H I, of equal size and'capacity, such .gears loosely encompassing one .it is desired to drive the latter, I employ atubular hub, L, which loosely encompasses such shaft between said gears and is connected with itby a spline-and-grooi'econnection which compels the hub to rotate with the shaft, but permits it to slide longitudinally thereon.

- A hand lever or shipper, a,is connected with the beam G and operates the hub L; and by means of this shipper the hub is made to engage one or the other of the gears H I, and

thereby transmit the rotations of the shaft J in one orthe other direction to the gear G, and through the latter and the shaft F gear E and rack D effect a traverse of the table A.

The shaft J is putin motion by a bevel-gear, M, fixed to its rear end, which is engaged and driven by a twin gear, N, secured to the lower end of a. vertical shaft, P, which is supported in brackets Q Q, secured to the rear side ofone of two upright columns or posts, R or It, which are erected respectively upon the beams O C and upon opposite sides of the table A, each of these posts terminating at front in a horizontal bend or housing, S or S, these housings being spanned by a horizontal beam or bridge, T, and

the posts, beams, and connecting-bridge constituting the support of the tool-carryin g mechanism, to be hereinafter explained.

To the upper end of the shaft P, I affix a pulley, U, about which, and a pulley, V, secured to a vertical driving-shaft, W, mounted in bearings in an arched standard, X, erected upon and spanning the rear ends ofthe beams O C, I pass an endless band, Y.

The shaft W is furnished with the ordinary fast and loose pulleys, A B, and carries at its lower end a second fast pulley, C, and above this latter pulley a double fast pulley, D, or pair of fast pulleys. The arrangement of the table and the mechanism for drivingit, as above described, resembles the corresponding parts of a planer in general use in machine-shops for planing metal, and is a compact, simple, and powerful device for holding the skins while subjected to the powerful thrusts of the dressingtools; and in practice I propose to add to two diagonally-opposite corners of the table steps upon which the attendant may stand and travel with it, in order the more readily and easily to apply and remove the hides or sides of leather.

The mechanism forsupportingand operating the dressing-tool is composed as follows: To the inner side of the front end of each housing S S, I add vertical ways or guides h h, and sliding upon these guides in a vertical plane at right angles to the path of movement of the table A, I employ a horizontal carriage, E, which constitutes the support of the movable tool carrier or head, such carriage in the present instance being composed of vertical side housings,ii, spanned and united at their upper and lower ends by horizontal barsjj, each of such bars having a vertical longitudinal slot, k or k, to receive and constitute a guide to a tubular hub, lorm. A vertical shaft, n, extends through the bores of the hubs lm; and I affix to this shaft,intermediate between the said hubs, a fast pulley, 0, about which and the pulley O, fixed to the shaft W, before named, an endless band, if, travels and puts the said shaft n in rotation.

The housings and bars above described eonstitute a supporting-frame for the movable toolcarriage, hereinafter described.

To enablelthe shaft 42 and the dressing-tools carriedfiby it to he moved bodily transversely of the table A in order to adapt such tools to operate upon the entire width of the skins upon such table, I proceed as follows: To the upper end of the upper hub, l, and thelower end of thelower hub, m, before named, I secure and extend rearward horizontal ears or brackets, a b, which constitute bearings to support a verticaljshaft, c, the lower end of which is steppediin the bracket 1), whileits upper end rises above the bracket a and carries two loose pulleys, d e, which are put in rotation by bands (1 e, passing about them and the pulley D, before named, one of such bands being loosely crossed. Intermediate between the pulleys d 6, last named, I mount upon the shaft 0 a tubular hub, f, which is connected with it by a spline-and-groove connection, and at each end is formed with spurs to engage corresponding spurs upon the adjacent ends of the hubs of the pulleys, by means of which the said hubf may be locked to one or theother of such pul-,v leys, after the manner of clutches ofthis class in general. (See Fig. 3.)

To ship or move the hubfinto engagement with one or the other of the pulleys d e, or to an idle intermediate position, I employ a horizontal forked plate, g, which embraces a pcripheral groove in the said hub, and its front shaft, h, which is journaled at its ends within the upper part of the carriage E, one end of the adjacent housing and having a lever, i affixed to it by which it may be rocked in its bearings.

Upon the rear edge of each barj orj, I cut a toothed rack, j or 10 and I secure to the shaft 0 two pinions, l W, which respectively engage such racks, it, being understood that the said racks j It? are arcs of circles struck fromthe axis of the shaft W, before named.

The two bands 01 0 travel in opposite directions. Hence if the shaft h is rocked in its throw the clutch f into connection with the pulley d, the tool-carriage is forced to .traverse the barsjj in one direction laterally ofthe table, while if the position of the clutch is retool-carriage is forced in the opposite direction.

To raise and lower the carriage E and the dressing-tools with respect to'thc table, or the table and the skins being operated thereupon,

ly above the table to permit of introduction and removal of such skins, but to regulate the degree of pressure with'which such tools shall act upon theskins, Iemploy at each end of such M, which at its lower end screws through the upper part or bar, j, of such carriage, and at its upper end is journaled in the bridge-plate T, before named, as spanning the tops of the housings S S, while at its extreme upper end and above such bridge each shaft has affixed to it a bevel-gear, 0 which is engaged and driven by a twin gear a which is affixed to horizontal shafts g r, mounted in bearin gs st erected upon the bridge T. 7

To insure greater'effectiveness in raising and lowering the carriage E, I employ a third-vertical screw-shaft, which is shown at a as screw ing through the barj, and at its upper end carrying a bevel-gear, c which engages and is driven by two bevel-gears, 20 affixed onto each end or base is secured to a horizontal ,rockcarriage E a vertical screw-threaded shaft,

such shaft protruding beyond the outer face of '1 0o hearings in a direction to raise the plate 9 and versed by a reverse rocking of the shaft the in order not only to elevate the tools sufficientinner end of the shaft qt W. 'A rotation of the shown at a b two in number, and as thin flat slabs of stone or other material, supported and sliding in grooves or guides 0 d formed in the inner faces of the lower partsof two vertical housings, f gfiwhich are united at top and constitute a furcated head, 9 which is supported upon and slides to and fro of-twohorizontal rods, 71 i the ends of which'are secured,

to pendent ears j? of a carrier in the formof a horizontal yoke shaped plate, k which at its center loosely rotates upon the lower part of the hub f, before named, such carrier being provided with a circular hand-rail, l pivoted to its upperpart, as shown at m m by which its change in position axially upon the hubf{ may be readily effected.

The purpose in monnting the tool-carrier loosely uponlthe hub f, and providing it with a handrail, as stated, being to enable it to be changed in positionradially aboutsuch shaft -to adjust the direction of thestroke' of thetools latter may be eifectuallytreated or the work carried on from the center of the skin outward in all directions, if desirable.

I propose to add between the upper edge of each tool and its stock a spring of suitable construction to equalize the pressure of the tool upon the skin.

To arrest and-lock the toolcarrier k in any given position and therebyirelieve the attendant of the great labor of holding by manual force, I affix to the extreme lower end of the tubular hub fa circular horizontal disk, a pierced with a concentric range of holes, 0 0 850., and operating with those holes I employ aspring-latch, 19 secured to the head'rail and provided at its inner end with a spur to enter anyone of the holes. i

The'dressing-tools a b are placed upon opposite sides of the center of the head gfland are sloping or inclined in order to exert the best action upon the'skin; andin order to lift each tool during its retreat movement above the surface of such skin and to lower it upon the skin during its active stroke, I proceed as follows: Each. tool has apendent spur, {1 upon its inner edge, and the two adjacent ends of these spurs are embraced by notches r 7 formed in the lower ends of ears 8 s depending from opposite sides of a stock or plate, t disposed within the head 9 and sliding back and forth therein, the reciprocating traverses of this plate 23 as well as the traverses of the head 9 upon the bars hit being efi'ected bya link, u", one end of which is pivoted to the upper part of such plate and the other eccentrically to the under side of a horizontal disk,

'0 secured to the extreme lower end of the shaft.

The arrangement of the disk a link a and stock or plate t, with the dressing-tools is such that a rotation of the disk effects, after the manner of an ordinary crank-wheel, a traverse in eachadirection of the head 9' upon the supports it i but in addition 'tothis movement the effect of the link is also to effect at each traverse of the head, as stated, a sliding movement of the stock t laterally within the head.

It will be seen that a sliding lateral movement of the stock t within the head 9 in either direction has a tendency to lower one dressingtool and raise the other, and the arrangement of parts,as before described, is such that as the head travels in one direction the advance or forward tool is depressed and scrapes upon the skin, while the rearward tool is lifted above such skin until as the head reaches the extreme of its traverse and is about to return, the rear wardtool becomes the front one and the link first exerts its function to move the stock within the head and lower such tool into contact i with the skin (the head remaining stationary while this takes place) and raisethe opposite tool, and then, as the stock brings up to a hearing against the head, continues its function to move the head and the tools bodily upon the guides without change in position of the tools within the head until the limit of the traverse in the opposite direction is reached, when the linkexerts its functions as before to first change the positions of the tools within the head and then efi'ect a traverse of the whole in the direction first named.

To suspend the functionof either of thedressing-tools at the pleasure of the attendant, as frequently becomes necessary in machinery of this class, I employ .two parallel horizontal rock-shafts, te m, which I journal in the upper part of the head g4 upon opposite sides of its center and at right angles to the path of movement of such head, and I affix to theinner side of each shaft a rigid wing or fin, 3 or a I find by experiment thatit is very necessary in operating my machinet-hat the tools should have some yielding movement, as when they meet with obstacles or. uneven portions of the hide in their traverses over it. To this end I propose to form the toolproperot two portions,

and attach it in the manneras hereinbefore V described. These two portions (sho wn in Figs.

.9 and 10 as a front and side elevaiion)eomprise ing, To each sideof the tool I attach a thin plate, f and in this I cut an elongated slot, gfisufficient to allowtof the action of the spring a with lower portion, 1). Through this slot I pass a bolt, h, which attaches and makes the lower portion integral with the upper in so far as its advance or retreat movements go. The upper portion, aflresting firmly against the stock or plate t, it follows that when the lower portion, b, of the tool meets any obstacle in its traverses, said portion is thrust back, compressing the spring c and yielding slightly, but

again resuming its position, owing to the com- 'in its traverse in either direction, but when turned to a horizontal position they intercept such stock and shorten the length-ofits traverse within the head, and in so doing prevent the lowering into active operation of the tool carried by such stock.

By means of the rock-shafts M00 and wings y a the attendant may suspend the functions of either one of the tools, which often becomes necessary in order that a stroke shall be given in only one directiontor instance, when work.- ing out the flanks or corners of the skin.

In operating with this machine an attendand stands upon each step of the table and travels wi h the latter, as before explained; and a third attendant manipulates the .handrail i and the crank-shaft, which raises and into or out of action.

lowers the tool-carriage E, while a fourth controls the shipper, which throws the gears H I Piles of skins to be treated are to be located at points contiguous to the extremes of movements of the table, and in beginning two skins are laid upon the table lengthwise of the latter. The driving-pulley V is now put'in revolution, and the dressingtools caused t0 move backward and forward,

as explained, and the carriage E is next lowered until the tools come in contact with the skin. The table is now, by means of the shipper a, moved forward or backward, as the case may .be, to the extent requisite to go over the skins from end to end as often or as long as occasion may require, while at the same time the carrier k by means of its hand-rail, is changed in position axially upon the hubf as often or as long as may be necessary to act in any given direction upon the skin radially of such hub, while, finally, the shipper is to be 0perated at such times as it is desirable to move the tools bodily across the skins to act upon the entire width of the same.

I do not broadly claim a yielding springpressed tool or slicker, believing this to be old. I claimv 1. In combination with the tool-supporting carriage, the screws n journaled with the machine, and engaging the carriage, and adapted vices operating as mechanism for raising and lowering the tool-supporting carriage, substantially as set forth.

2. The combination of toothed racks j W,

pinions l m, and shaft 0 with the traversing tool-carriage and the table, substantially as I set forth.

3. The means described for effecting traverses of the tool-carriage and tools bodily in opposite directions, consisting of the toothed racksj k pinions Z 112 carried by the shaft 0, pulleys d e, rotating in opposite directions, and mounted loosely upon such shaft h, and the clutchf, sliding upon such shaft and adapted to engage either of the pulleys.

4:. The combination of a table, a supporting-frame, and a carriage adapted to travel horizontally on said frame with a vertical shaft, 0, journaled in said carriage, a pair of loose pulleys on said shaft, an intermediate sliding clutch splined to said shaft, a forked plate, 9, which engages with the clutch to .10 00 with their wings 11 2 substantially as herein set forth and described.

7; In'combination with the head '9 and stock t the disk n and itslink a connected with the stock and operating to effect the movement of both head and stock, substantially as stated.

8. In combination with the head g, sliding stock. or plate t the rock-shafts w m with their wings 3 .2 and the tools at b each consisting of two portions, a b, with an intervening spring, 0 all as and for the purposes described 9.-The combination, with the head g supported upon the rods 71, t slidingplate t, with its notched earsf, of the dressing-toolsformed 'in twoparts with the slotted strapf, bolt h,

and the intervening spring, 0 whereby an elastic or yielding movement is imparted to said tools, substantially as herein described.

.I'nv testimony whereof I affix my signature in presence of two witnesses.

WILLIA M GOODMAN.

Witnesses:

H. E.- LODGE, F. G. SIMPsoN.

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