US695729A - Leather-working machine. - Google Patents

Description

No. 695,729. Patented Mar. I8, I902. A. F. JONES.

LEATHER WORKING MACHINE.

(Applicaflon filed Nov. 20, 1900.) (No Model.) 3 Sheets-Sheet I.

No. 695,729. Patented Mar. l8, I902.

A. F. JONES.

LEATHER WORKING MACHINE.

(Application filed Nov. 20, 1900.)

(No Model.) 3 Sheets-Sheet 2.

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No. 695,729. Patented Mar. I8, 1902.

A F. JONES.

LEATHER WORKING MACHINE.

, (Application filed Nov. 20, 1900. (No Model.) a Sheets8haet '3.

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ALBERT F. JONES, OF SALEM, MASSACHUSETTS, ASSIGNOR, BY MESNE AS- SIGNMENTS, TO VAUGHN MACHINE COMPANY, OF- BOSTON, MASSACHU- SETTS, A CORPORATION OF IVEST VIRGINIA.

LEATHER-WORKING MACHINE.

SPECIFICATION forming part of Letters Patent N 0. 695,729, dated March 18, 1902. Application filed November 20. 1900- Serial No. 37,116. (No model.)

To all whom it may concern.-

Be itknown that I, ALBERT F. JONES, acitizen of the United States, residing in Salem, in the county of Essex and State of Massachusetts, have invented an Improvement in Leather-forking Machines, of which the following description, in connection with the accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to a machine for working leather, and is herein shown as embodied in a putting-out machine especially adapted for working on light stock, such as skins.

IS The invention is an improvement upon that class of leather-working machines in which a series of tables are caused to travel in an endless path and are acted upon by suitable tools.

One of the features of this invention is to provide a machine which is capable of being run by a single operator and one in which the hide or skin may be acted upon twice before returning to the starting-point.

In accordance with this invention the tables which support the work are pivotally connected to an endless carrier, (shown as sprocketchains,) so that the said tables may start at the front of the machine and travel in a continuous path to the rear of the machine and thence back to the front of the machine, moving in a substantially triangular path, which has a vertical portion at the front of the machine, where the hides or skins may be removed from one table and a new or untreated skin placed thereon, which is thereafter carried around the machine and acted upon by the working tools. The tables are preferably pivoted between their ends to the endless carrier, so that they may be reversed and caused to move down in front of the operator in a substantially vertical position, thereby enabling a single operator to put on the untreated skins and to take off the treated skins, thus economizing in the cost of operating ma- 4 5 chines of this class. The reversal of the tables referred to may and preferably will be effected automatically, as will be described. The hide or skin on its passage from the front toward the rear of the machine may and preferably will be acted upon by operating-tools, which may be of any suitable or desired construction and herein shown as two sets of puttingout rolls, and on its passage from the rear to the front of the machine the hide or skin is preferably acted upon by the other sets of tools, which may be putting-out rolls, like the front set,or which may be finishing-rolls, The putting-out rolls may be rotated, as will be described, and may be movable toward and from the path of movement of the tables, as will be described. These and other features of this invention will be pointed out in the claims at the end of this specification.

Figures 1 and 2 are opposite side elevations, and Fig. 3 a longitudinal section, of an apparatus embodying this invention.

Referring to the drawings, the framework to support the working parts consists of two uprights or side frames a Z), separated from each other the proper or desired distance to permit of the travel between them of a series or plurality of tables 0, (herein shown as six in number,) the side frames, as shown, being bolted or otherwise secured to a base cl.

The tables 0 are pivotally connected at or near their center and on their opposite sides to an endless carrier, (shown as link-chains e f,) which, as herein shown, are respectively passed over three large sprocket-wheels g h t' at one side of the machine and over like sprocket-wheels j 7t Z at the opposite side of the machine. The sprocket-wheels g j are mounted on a shaft on, the sprocket-Wheels h 7; on a shaft 12, both located, as shown, atthe front of the machine, and the sprocketwheels 2 Z are fast on a shaft 0 at the rear of the machine, situated so as to form the apex of a triangle, with the shafts mm at the opposite corners of said triangle, as shown in Fig. 3. The tables 0 may be pivotally connected to the link chains of, as herein represented,by supporting pins or rodsp q,projecting from opposite sides of said tables near their center and extended through bearing hubs r 8, attached to the links comprising said chains near the center of the said links. Each link chain will preferably be made double-that is, composed of double links-and the bearing-hubs r s will be fastened between said links; but any other suitable construc- Ioo tion may be employed. The tables 0, being hung at their center, are capable of being turned in either direction, which enables the height of the machine to be reduced and also enables the machine to be run bya single operator, as will be described.

The link chains constitute one form of endless carrier for the work supports or tables 0, and are moved,as herein shown,by driving the sprocket-wheel shaft from the m ain shaft 2, provided, as herein shown, with a pulley 3. The main shaft 2 has fast on it a pinion 4, (see Fig. 1,) which meshes with a gear on a counter-shaft 6, having at its opposite end a pinion 7, (see Fig. 2,) which meshes with a gear 8, fast on the sprocket-Wheel shaft 0. The positive rotation of the sprocket-wheels 1' Z on the shaft 0 produces, by means of the link chains, rotation of the sprocket-wheels on the shafts m n at the front end of the machine. The main shaft 2 is driven in such direction as to cause the tables to travel from the front to the rear of the machine and thence back to the front of the machine, and during this movement or travel of the tables the hide or skin on each table is preferably subjected to the action of two sets of operating-tools located intermediate of the front and rear sprocket-wheels, as represented in Fig. 3. The lower set of operating-tools may and preferably will consist of two pairs of putting-out rolls 10 11 12 13, and the upper set may and preferably will consist of like pairs of puttingout rolls 14 15 16 17. The putting-out rolls 10 11 have hearings in suitable supports movable toward and from the path of movement of the tables, and in the present instance the roll 10 has bearings in levers 18 19, pivoted to the side frames Ct 71, and the roll 11 has bearings in similar levers 20 21, pivoted, respectively, to the side frames at b, and the levers at opposite ends of the rolls 1O 11 are connected by preferably adjustable links 22 23 to levers 24, pivoted to the side frames at b, and provided with counterweights 25, the links 22 23 being joined to the levers 24 on opposite sides of their pivots. The roll 12 has hearings in similar levers 31, and the roll 13 has bearings in levers 32 33, the levers 3O 32 and 31 33 being connected by links 34 35 to counterweighted levers 36, pivoted to the side frames at b. The upper set of rolls 14 15 16 17 are supported in a similar manner as the lower set of rolls, the rolls 14 15 having bearings in the levers 41 42 43 and the rolls 16 17 having bearings in the levers 4445 46 47.

The levers 4O 42 41 43 are connected by links 50 51 to counterweighted levers 52 on opposite sides of their pivots, and the levers 44 46 45 47 are connected to counterweighted levers 53 on opposite sides of their pivots by links 54 55. The counterweights on the levers referred to act to bring the cooperating rolls of the various pairs toward each other and into position to engage with and act upon the hide or skin on a table as the latter is carried between said cooperating rolls, the Weights on the said counterbalancing-levers exerting a working pressure on the hide or skin, and the downward movement of the weighted levers is limited by suitable stops,

shown as pins 59, projecting from the side frames.

The working rolls may and preferably will be positively rotated, which may and preferably will be accomplished as will be described.

The pair of working rolls 1O 11 are rotated in opposite directions by means of link chains 61, (see Fig. 1,) passed about sprocketwheels 62 63 on the shafts of the rolls 10 11 and about sprocket-Wheels (not shown) on shafts 64 65, having mounted thereon a second set of sprocket-wheels 66 67, which are reversely engaged by a link chain 68, passed about a sprocket-Wheel 69 on a shaft 70, pro-- vided with a sprocket-wheel 71, which is connected by a link chain 72 to a sprocket-wheel (not shown) on the main shaft 2. The main shaft 2 is provided with a second sprocketwheel 73, which rotates the pair 16 17 of the upper set of working rolls in a similar manner to that just described by means of a link chain 74, sprocket-wheel 75 on shaft 0, sprocket-wheel 76, link chain 77, sprocket- Which are in line with the sprocket-wheels 7 8 79, and only one, 790, of which is shown, and link chains 81, connecting said second pair of sprocket-wheels with sprocket-wheels 82 83 on the shafts of the rolls 16 17. The pair 12 13 of the lower set of working rolls is driven in a similar manner from the shaft 0 (see Fig. 2) by sprocket wheel 85, link chain 86, sprocket-wheels 87 8S, sprocket-wheels 89 90, link chains 91 92, and sprocket-wheels 93 94 on the shafts of the rolls 12 13. The pair 14 15 of the upper set of working rolls is driven from the shaft 0 by a sprocket-wheel, (not shown,) link chain 95, sprocket-wheel 96 on shaft 97, a like sprocket on shaft 97 and not herein shown, link chain 98, sprocket-wheels 99 100 101 102, link chains 103 104, and sprocket-wheels 105 106 on the shafts of the rolls 14 15. The Working rolls of each pair are thus positively rotated and are yet free to move toward and from each other and toward and from the path of movement of the traveling tables. In operation the tables travel from the front to the rear of the machine and thence back to the front again, as indicated by the arrow in Fig. 3, and on their travel they are supported by suitable guides 110 112, suitably attached to the framework of the machine, the guides 110 on one side of the machine being made continuous and provided with a curved rear portion 113, which latter cooperate with studs or rolls 114 115 on one side of the table and located near the opposite ends of the same to turn the tables, as

shown in Fig. 3, and direct them toward the upper set of operating-rolls.

After a table has passed beyond the upper wheels 73 79, a second pair of sprocket-wheels,

set of operating-rolls on its return movement its position or direction of travel, as herein shown, is partially reversed, so that it travels downward in an upright position with its front end uppermost until the said table has reached a position low enough to enable the reversal of movement to be completed, so as to present the front end of the table to the lower set of operating-rolls. The reversal of movement of the tables just described enables a single operator to run the machine, as opportunity is afiorded to take off a treated skin afterit has been operated upon by the upper set of working rolls and to put onto the table a new or untreated skin.

The reversal of the table referred to may and preferably will be accomplished by suitable devices, one construction of which is herein shown. A substantially upright or vertical bar 120 is attached to the side frame Z) by horizontal bars 121 and oppositely-inclinedv bars 122 123. The upright bar 120 is provided at its upper end with a curved portion or cam 124: to resist the movement of the table in the direction away from the upper set of rolls, so that as said table is carried downward by the link chains it moves in front of the operator with its front edge uppermost, thus affording ample opportunity for the operator to place an untreated skin over the table, which proceeds downward in a substantially vertical path until the roller or stud 115 engages a curved arm or cam 125 on the lower guide-bar 110, whereupon the downward movement of the table in a vertical path is arrested and the table turned by the continued movement of-the endless carriers, as represented in Fig. 3, to complete the reverse movement of said table and place the latter with its front end in a posit-ion to be carried between the lower set of operatingrolls. a

The hide or skin on a table is put out or otherwise worked by the lower set of working rolls or tools on the passage of the table from the front to the rear of the machine and is subjected to the action of the upper set of tools or rolls on the passage of said table from the rear to the front of the machine.

When the table on its return movement has moved far enough so that the skin thereon has passed by the upper set of working tools, the said skin may be drawn off or taken from the table, and after the latter has been partially reversed and turned into a substantially vertical position, as shown in Fig. 3, a new skin may be placed on the table by the operator. The operation just described is repeated as each table is carried about the machine.

I may prefer to use cylindrical tools or working rolls, as herein shown; but I do not desire to limit my invention to any particular construction or shape of tools. By causing the tables to travel in a substantially triangu lar path with a vertical portion of said path at the front of the machine the machine may be made of a minimum height and allow the tables to move down in front of the operator.

I claim- 1 1. In an apparatus of the class described, the combination with an endless carrier, of a table or support pivotally attached to said carrier intermediate of the ends of said table, means to move said carrier and cause the table or support to be carried about the machine, and means to automatically reverse the movement of said table, substantially as and for the purpose specified.

2. In an apparatus of the class described, the combination with an endless carrier, a table or support pivotally attached to said carrier intermediate of its ends to enable said table to be turned in opposite directions, Working tools to act on a hide or skin onsaid table, and means to automatically reverse said table or support, substantially as described.

3. In an apparatus of the class described, the combination with an endless carrier movable in a substantially triangular path, of a table pivotally attached to said carrier and capable of being turned in opposite directions, a guide to direct the table on its movement from one inclined path to the other, and means to automatically change the position of the table and cause it to be moved in a substantially vertical path, substantially as described.

4. In an apparatus of the class described, the combination with a series of tables provided at their sides with substantially central pivots, means to which said pivots are connected to carry said tables in an endless path, means to automatically reverse the position of each of the said tables while being carried through a portion of its endless path, and means cooperating with said table to act on a hide or skin placed thereon, substantially as described.

5. In an apparatus of the class described, the combination with an endless carrier, a table pivoted thereto, working tools cooperatin g with the said table as it is moved from the front to the rear of the apparatus, and working tools cooperating with said table as it is moved from the rear to the front of the apparatus, substantially as and for the purpose specified.

6. In an apparatus of the character described, the combination with a carrier movable in an endless path, of a table orsupport pivoted to said carrier intermediate of its ends to enable said table to be reversed in its movement, and means for reversing said table, substantially as described.

7. In an apparatus of the character described, the combination with an endless carrier movable in a substantially triangular path having a substantially vertical portion at the front of the apparatus, of a table pivotally attached to said carrier, and a guide to direct the table on its movement from one & 695,729

portion to another portion of said triangular from one inclined path to the other, snbstan- 1o path, substantially as described. tially as described.

8. In an apparatus of the class described, In testimony whereof I have signed my the combination with an endless carrier inovname to this specification in the presence of 5 able in a substantially triangular path, of a two subscribing Witnesses.

table pivotally attached to said carrier inter- ALBERT F. JONES. mediate the ends of said table, and capable \Vitnesses: of being turned in opposite directions, and a .TAS. H. CHURCHILL,

guide to direct the table on its movement J. MURPHY.

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