US916124A - Machine for mending imperfections in patent-leather. - Google Patents

Description

W. A. DUNBAR. MACHINE FOR MENDING IMPERFEGTIONS m PATENT LEATHER.

AYPLIOA'iION FILED DBO. 3,1902.

ML 9m 1E in 38 L INT 5am Mm d4- flu t H e t a P W. A. DUNBAR. MACHINE FOR MENDING IMPERPEOTIONS IN PATENT LEATHER.

APPLICATION FILED DEO.3,1902.

Patented Mar. 23, 1909.

4 SHEETS-SHEET 2.

III

\A/I-f'N E 8358 INVENTOR W. A. DUNBAR. MACHINE FOR MBNDING IMPBRFEGTIONS IN PATENT LEATHER.

APPLICATION TILED DBO. 3,1902.

Patented Mar. 23, 1909.

4 SHBBTSSHEET 3.

\A/FFNESSl-LS W. A. DUNBAR. MACHINE FOR MENDING' IMPERFEGTIONS IN PATENT LEATHER.

APPLICATION FILED DBO. 3,1902.

Patented Mar. 23, 1909.

, INVENTOH' b mm s %2%/ 19M WILLIAM A. DUNBAR, OF LYNN, MASSACHUSETTS.

MACHINE FOR MENDING IMPERFECTIONS IN PATENT-LEATHER.

Specification of Letters Patent.

Patented March 23, 1909.

Application filed December 3, 1902. Serial No. 133,666.

To all whom it may concern:

' Be it known that I, WiLLIAM A. DUNBAR, a citizen of the United States, residing at Lynn, in the county of Essex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Mending Imperfections in Patent-Leather; and I do hereby declare the following to be a full, clear,

and exact description of the invention, such as Willenable others skilled in the art to which-it appertains' to make and use the same.

Theo-h ect of this invention is to produce a m achine or mending imperfections in patent leather, especially the cracks frequently occurring in the toe-caps ofshoes in cones-- Y quence' of the bendin of the leather in the dries. To conceal the unction between the parent on a casual inspection. 45

process of lasting. eretofore the mending ,of such imperfections, commonly known as tip fixing, has beenperformed chiefly by hand. The .workman removes the defective portion of the finish 'by sand-papering the surface until the varnish is removed and the surface of the leather is exposed. ap lies to the exposed part of the leather a He then fluid called by the trade fixer number 1. This operation is performed by means of a piece of cloth wrapped about the forefinger;

the workman removes the stopper from a. bottle of the fixer, and transfers to the cloth'o'n his finger a small quantity of the fixer which adheres to the bottom of the "stopper. He then applies the cloth to the spot tobe mended, and by a circular rubbing motion fills the grain of the leather and polishes the surface of the fixer as it mend and the general surface this operation is repeated after the shoe has been laid aside to dr using a fluid called fixer number 2, w 'ch is spread over a somewhat larger surface than fixer number 1, so as to blend the mended area into the original surface in order that the mend may not be ap- This process of repair, when performed by hand, as above described, is slow and wasteful, and the results are not. entirely satisfactory. The rubbing required in' the sand-papering or scouring cannot be performed rapidly by hand, and the sand-paper so used is not cconomized by uniform use of its entire surface. The operator cannot see the progress of the Work Without interrupting the operation, which causes further loss of time. The polishing, owing to the nature of the varnish used, is best performed by a more rapid motion of the polishing cloth and a greater pressure than can be imparted to it by hand. The fixin fluids are expensive and volatile and are liable to be wasted in the hand method. A further disadvantage of the hand method lies in the fact that after the scouring the surface of the leather is rough, and not well adapted to receive a finish.

It is the object of tie present invention to produce a machine which shall )erform the operations of scouring and po ishing and which shall also dust and compact the surface of the leather prior to the application of the fixcrs, all in a manner superior to the abovedescribed hand method.

In the drawings forming a part of this specification, Figure 1 is a plan view of the entire machine; Fig. 2 is an end elevation looking from left to right Fig. 3 is a plan VlOW of a detail of the scouring mechanism, and Fig. 4 is a section of the same part on the line 44; Fig. 5 is a plan view of one of the polishin heads, and Fig. 6 is a vertical soction of t io same part on the line 66 Fig. 7 is a front elevation of the device for dclivcring fixer N o; 1 Fig. 8 is a vertical section on the reservoir for containing and feeding fixer No. 1, and Fig. 9 is a vertical section of the device for feeding fixer No. 2.

The illustrated embodiment of my machine is constructed as follows z- Upon a bed-plate are uprights which support a horizontal oscillating arm carrying a scouring device, vertical spindles carrying polishing devices, a horizontal spindle carrymg a cleaning and polishing brush, and the necessary counter shafts for driving these members. A horizontal counter shaft 1 having journals in uprights 2, 2, upon the bedlate 3 carries a loose driving pulley and two ed pulleys. U n the loose pulley and upon one of the med pulleys are the cooperating members of a clutch by means of which the loose pulley which is in communication with a suitable source of power may be caused to drive the counter-shaft and the fixed pulleys. A belt 4 communicates motion to a pulley 5 fixed on a spindle 6 journaled in uprights 7, 7. Upon this spindlois fixed a circular brushS. 1

,Abclt 9 communicates motion from the pulley 10 to a pulley 11 fixed on a vertical. shaft. 12 journalcd at one end in thebedplatc 3 and at the other in a projection 13 from an upright 14. A horizontal arm '15 pivoted by a'screw 16 to the top of the upright 14 is caused to oscillate by a roller-pin 17, fixed in the crank disk 18 fast to the upper end of the vertical shaft 12, acting within the forked or slotted end of the arm 15. The other end of the arm carries the scouring 'de vice, shown particularly in Figs. 3 and 4. An oblong block 19 is attached to the end of the arm 15. A strip of sand-paper 20 slightly longer than the block is held'in place by its upturned ends which are clamped between the clamp jaws 21, 21 and the ends of the block. These clamp jaws are made integral with overlapping plates 22 and 23, which are held in place by screws 24, 24, passing through slots in the plates. By pressing together the pins and 26, which are fixed in the plates 23 and 22 respectively, the plates will be moved longitudinally, and the jaws 21, 21 will be moved out of engagement with the ends of the iece of sand-paper so that a new piece may e inserted. Upon releasing the pins 25 and 26 they will be forced apart by the spring-27 and the clamp aws will hold the sand-paper firmly against the ends of the block. While this skiving device forms no part of the invention claimed herein, it is illustrated in the drawings and described for the purpose of setting forth the complete description of the machine in which the inven-' I overhanging arms 30 and 31 projecting from uprights 32 and 33 are rotated by pulleys 34 and 35, belts 36 and 37, and pulleys 38 and 39 fast upon counter shafts. These countershafts are rotated by belt connections with the vertical shaft 121 The journals of the spindles 28 and 29 are in the forked ends of the arms 30 and 31. These spindles are prevented from downward motion by the pulleys 34 and fixed upon them, but may be moved upward by a pressure suflicient to com ress the s rings 40 and 40, Figs. 7 and 9. pon the ower ends of the spindles 28 and 29 are shell chucks 41, 41 which hold the polishing heads, Figs. 5 and 6. Each polishing head comprises means for attaching the head to the spindle, a yielding cushion, and means for retaining a polishing fabric upon the working surface of the cushion. In the machine particularly described these comprise a'cylin drical wooden block 42 the upper part of which screws into the shell chuck 41,

and ,a metal collar 44 with an inturned flange 45 upon its lower end. A cylindrical piece of spongy rubber 46, held by the flange 45 gives yielding support to the polishing cloth 47, which is drawn tightly over the polishing head and secured by a rubber or metal band 48.

The means for feeding and measuring the fixer No. 1 comprise a receptacle for the fixer, an arm to. convey it to the polishing head and pedal-actuated mechanism to op-' crate the arm.

A receptacle 49 for the fixer is provided.

fixer, which is viscous, passes slowly through I a passage in the stem and falls on a pad 52 mounted on an arm'53 fixed to a vertical shaft 54 j'ournaled at 55 and 55 to brackets attached to'the fram'e of the machine. The lower end of the shaft 54 rests on a lever 55 pivoted at 56 to the frame. To theother end of the lever is attached a vertical rod connected with a treadle 66 and supported in its raised position by a spring 67. A short lever 68 pivoted at 69 to the frame of the machine engages at one end a collar 70 fixed on the shaft 54. To the other end of the lever 68 is pivoted a rod 71 which passes loosely through'a hole in the lever 55. A, cross pin 72 in the lower end of the rod 71 is engaged by the lever 55 when it is depressed Upon a pin 73 in the collar 70 is pivoted a connecting rod 74 the other end of which is attached to one arm of a bell-crank 75 pivoted to the base-plate of the machine. To the other arm of thebell-crank lever is pivoted a rod '7 6 passing loosely through a hole in an extension .77 from the treadle rod 65. A spring 78 engages at one end the extension 77 and at the other end an adjusting nut on the rod 76. A spring 81 tends to keep the bell crank lever in the position illustrated.

The mechanism above described operates as -follows:-Upon the depression of the treadle the treadle rod 65 is drawn down, rotatingthe lever 55 slightly on its pivot 56. During the first part of -this,motion the shaft 54 follows the lever 55 upon which it is supported, and drops through its bearings 55 and 55 until a collar 79 fixed on the shaft bears on the" upper journal 55?. This motion lowers the pad 52 from the stem 50 and removes on the pad the fixer which has passed down and collected in a drop between the stem and the pad. Upon the continued motion of the pedal the shaft 54 is supported by the collar 7 9, but the spring 78 is compressed by the extension 77 sufiiciently to overcome the spring 81; the bell-crank lever rocks to the left, and the connecting rod 74 rotates the shaft 54 until the pad 52 has as-l the pedal it is raised and the parts returned to their positions by the springs, the pad first dropping from the polishing head, then rotating to its position under the feed stem 50, and then rising to its original position. The reverse rotation of the shaft 54 is limited by a pin in the collar 79 engaging a pin on the bracket'55. Beveled faces 80 on the bracket 55 engage the pin 73 when the shaft is raised and prevent rebounding of the arm 53 when the rotation of the shaft 54 is arrested; When the apparatus is not in use the reservoir is rotated and the stem 50 screwed down until it is in contact with the pad, whereby the flow of fixer is interrupted. lo remove dried fixer-from the aperture in the stem a plunger carrying a cleaning wire is mounted 1n the cap of the reservoir 49.

The means for feeding fixer No. 2 are somewhat different owing to the fact that the fluid is'much thinner than fixer No. 1. The receptacle 57 is attached to the arm 31. A valve stem 58 carries at its lower end a needle valve which closes the passage from the receptacle to the tube 59, which asses down through the spindle and the ohshing head and ends a short distance a ove the.

polishing cloth. A spring 60 keeps the valve normally closed. An arm 61 fast to a vertical rod 62 embraces the upper portion of the stem 58.- An arm 63 fast to the lower end of the rod 62 rests upon the top of the pulley 35. When the spindle is raised the pulley raises the arm 63, the rod 62 and the arm 61, which latter raises the valve stem 58 by means of adjustable nuts'thereon, and opens the valve. When the spindle falls the parts are returned to their normal positions by the action of gravity and the spring 60. The fixer No. 2 passes through the tube 59 to the polishing head and the amount of fixer fed will be proportional to the time during which the spindle is held in its raised position by the operator. I

In using my machine the operator proceeds as follows :-.After setting the machine in motion by means of the clutch he presents the part of the leather to be mended against the sand-paper on the scourer. When the surface has been sufficiently cleaned he presents it to the rotating brush. This brush should have stiff bristles, so that it may not only remove dust but may also remove the loose fibers and compact the surface. The operator next operates the treadle to apply fixer to the first olishing head and presents the scoured sur ace to the polishing head thereby applying and )olishing the fixer. This action is repeated until a suflicient quantity of the fixer has been applied. The operator next applies the shoe to the second polishing head, and presses thereupon with sullicient force to raise the spindle and open the needIe' x' alVe. The fixer N o. 2 passes down the tube and drips on the inner side of the polishing cloth. The fixer immediately soaks through the cloth and comes in contact with the leather. When enough of the fixer has been fed the operator moderates the ressure of the shoe a ainst the polishing head thereby allowing tic spindle to drop and the valve to close. The )olishing is then completed with the polishing head in its normal position. The fixer No. 2 is spread over a surface slightly greater than the scoured'surface, and it partly dissolves and blends the old and the new finish, whereby the surface is left smooth and the mend concealed.

While I have thus described and shown in the drawings the preferred embodiment of my invention, it is to be distinctly under stood that my invention is not specificall limited thereto as the same may be ember ied in other forms of meehanism without de-- parture therefrom.

Where the words patent leather are used throughout this specification and the claims it is to. be understood that I intend thereby to include otherforins of enameled leather, or leather provided with a surface which is liable to crack when bent. Where '1 have used the words polishing material I wish to be understood as meaning either the fluids specifically mentioned as fixersl or any other suitable fluid or solid material.

Having thus described my invention, I claim as new and desire to secure by Letters Patent.

1. A machine for mending )atent leather, having, in combination, a polishing head, a receptacle for polishing material, means for delivering polishing material from said receptacle to the surface .of said polishing head, and means for controlling the delivery .105.

of polishing material to the head, connected to the head, so that pressure against the head operates to permit the delivery of polishing material thereto, substantially as described.

2. A machine for mending patent leather, having, in combination, a polishing head, means for rotating the head, means for yieldingly supporting the head against the pressure of the work thereagainst, and means 0 )eratively connected with the head for applying polishing material to the surface thereof operating to apply olishing material to the surface of the head upon the exertion of sufficient pressure of the work there against, substantially as described.

3. A machine for mending patent leather, having, in combination, a polishing head, means for containing and feeding polishing material, and means for transferring the material from the feeding means to the polishing head comprising a rec-e tacle for receiving and transferrin the po ishing material and means eontro led by theoperator for giving to the said reee taclo movement's toward and away from tie feeding means 7 meme and the polishing head, end for moving the I covering and the tube being arranged to dereceptecle between the said members, snbliver the polishing material through the apstentielly as described. erture to the inner surface of the textile nia- 4. A machine for mendin patent leather, I teriztl, substantially as described. 15 5 having, in combination, a po ishing heed pro- In testimony whereof ,1 Mini my signature, 'vided with a flexible cushion covered with in presence of two Witnesses.-

textile fabric, a rece tecle for. polishing me- WVILLIANI A DUNEAR terial, and means or delivering polishing material from the receptacle to the polishing Witnesses: 10 head comprising a tube, the cushion having Holman VAN Evnnnn,

an axial aperture extending tothe textile FARNUM F. DORSEY.

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