US1635081A - Chain-drive glazing machine - Google Patents

Description

July 5 '1927.

D. E. HARDING CHAI DRIVE GLAZING MACHINE Filed A112 18, 1925 3 Sheets-Sheet 1 wMYAML.

www:

.WNV

i I 1,635,081 July 5 1927' D. E. HARDlNG CHAIN DRIVE GLZING MACHINE Filed Aug. 1s, 1925 Y :s sheets-sheet 2 Eazy. Z.

July 5 ,27 D. :.HARDING cgmN DRIVE GLAZING MACHINE Filed Aug. 18, 192%? s sneets-shet 3 Patented July 5,

UNITED STATE/s PATENT oFF/ice.

:DANA E. HARDING, or ARLINGTON, MASSACHUSETTS, ASSIGNOB T HABDlNG EN-GI- NEEBINGOOMBANY, or BOSTON, MAssAcHUsETTs, A conronA'rIon or MAS- SACHUSETTS.

'CHAIN-DRIVE GLAZING MACHINE.

My present invention relates to leather working machines, and more particularly to an improved machine for glazing or ironing leather.

An improved step in the process oft manufacturing leather from hides and skins consists, inthe case of certain kinds ot leather,

of burnishing or ironing thel grain side of.

the leather so as to impart a glossyiinish thereto. Heretot-ore this operati-on has been performed by mechanical means in which a rapidly reciprocating member is moved over the grain side ot a sli-cet oit leather' held in position on a bed or anvil. r'Ihese prior ma chines are Vobjectionable trom a number of standpoints among which are, first, the excessive vibration of such machines which necessitates the strengthening andA shoring of a building in which they are located to an excessive degree and such strengthening and shoring has continually to be Watched and added to. Second, these machines are exceedingly dangerous as the workman sits closely adjacent to the rapidly reciprocating member and the least ill timed movement on his part is apt to result in his being struck by the moving memb-er and injured.V As a matter of tact, numerous accidents occur from this one cause and the machines have acquired throughout the various tanneries the name of man killers. A still further objection to these machines is the fact that the leather operated on must be held in position on the bed or anvil by the workmanagainst a glazing toolor tools mounted on an endless chain or belt in which mechanical means is employed to hold the leather in position while the glazing tool is in engagement therewith and which holding means is auto,- matically released when the glazing tool passes out of engagement with the leather.

vPreferably I employ a plurality of glazing tools mounted on vthesame end-iess'chain or belt and time the holding device therewith in such manner as to allow ample time for the workman to move the leather after the clamping means has been released therefrom and before the succeeding glazing tool comes into engagement with the leather and the clamp automatically operated again.

The principal object of my invention, therefore, is an improved glazing machine.

Another object of my invention is an improved glazing machine provided with a non-reciprocating glazing tool.

'A further object of my invention is an imn proved leather clamping means and glazing tool operated in timed relation with respect to each other. i

Other objects and novel features of the construction and arrangement of parts will appearr as the description of the invention progresses. In the accom anying drawings illustrating the preferr-d embodiment of my invention, I

Fig. l is a rear elevation, certain portions ot the machine being broken away; i'

F ig. 2 is a front elevation;

Fig. 3 is a perspective view of the work holding table; i

Fig. 4 isa perspective view of the combined base and pedestal on which the apparatus is mounted, and

Fig. 5 roll.

Referring to the drawings, 1() designates a base which has formed integral therewith ,and at one end thereof an upwardly extending column 11, such column having formed integral therewith at its upper end and eX- tending forwardly and parallel to the 'base the arm l2, the base 10, pedestal 11 and is a perspective view of a glazing arm 12 defining a substantially .open rectan- 1 gular space in'which is mounted the working parts of the machine. Secured to each side of the arm 12 parallel to .each other and extending downwardly from said arm are bars 13. Secured to the inner faces of the .bars 13 and spaced apart from and parallel to each other and to the arm 12 are bars 14, the rear ends of these bars being secured to the pedestal 11 by bolts 15. Secured to the inner faces of the front ends of the bars let and spaced apart from each other are bearing members 16, and also secured to the inner faces of the bars 14 adjacent to the rear ends thereof are similar bearing members 17, these bearing members also being spaced apart from each other. Rotatably mounted in the front bearing members 16 is a lshaft 1S and on this shaft are. secured sprockets 19, such sprockets being spaced apart from each other, as clearly shown in Fig. 2. Rotatably mounted in the bearing members 17 and parallel to the shaft 18 is a shaft 20, and secured to such shaft and in alignment with the sprockets 19 are sprockets 21, these sprockets being equal in pitch and diameter to the sprockets 19. Over the sprockets 19 and 2O run the endless chains 22. Secured to the lowermost bar 14 on the right hand side of the machine, looking to the rear, is a vertical bearing 23 which is in alignment with a bearing 24 formed on a bracket 25 secured to the pedestal 11. Rovtatably mounted in the bearings 23 and 24 is a vertical shaft 26, and secured to the top end of such shaft is a bevel gear 27 that meshes with and drives a bevel gear 28 secured to one end of the shaft 20. Secured to the lower end of the shaft 26 is a bevel gear 29 which meshes with and is .driven by a bevel gear 30 secured to one end of a shaft 31 that is rotatably mounted in bearings 32 and 33. rlhe bearing 32 is formed on the bracket 25 above referred to and the bearing 33 is secured to the pedestal 11, as clearly shown in Fig. 2. The shaft 31 extends laterally outward from the left hand side of the machine, as viewed in Fig. 2, and mounted on such extension are tight and loose pulleys 34 and 35 respectively, and over such pulleys is adapted to run a belt 36 leading from any suitable source of power and by means of which power is transmitted to the machine. A collar 37 prevents longitudinal movement of the loose pulley on the shaft 31. Secured to the inner faces of the bars 14 and with their outer .edges in alignment with the periphery of the bearing members 16 and 17 are tracks 38.

Secured to, and carried by, the endless chains 22 are glazing devices comprising bed members 39 provided on one face with parallelly arranged shafts 40 that extend laterally of the direction of travel of the chains Rotatably mounted on the outer ends of such shafts are anti-friction rollers 41 which roll on the tracks 38 above referred to and on the outer periphery of the rounded end of the bearing members 16 and 17. Formed on the bed member 39 on the face thereof which carries the shafts 40 are jaws 42 in which is firmly held a glazing block 43, this block being of any suitable diameter, but usually and preferably of glass. While I may use one or as many of the glazing blocks 43 and the holders in which they are contained in the machine, I preferably use the lower ends of the bars 13 by bolts 44 and r lying parallel to the members 38 a distance slightly greater than the diameter of the rolls 41 are bars 45 and such bars cooperate with the rolls 41 and the tracks 38 to prevent a rocking movement of the bed members 39 and attached parts.

Secured to the base 10 by bolts 46 and eX- i tending upwardly therefrom are lugs 47. Formed integral with the lugs 47 is a platform 48 and on this platform is mounted a bed or anvil 49, suitable provision being made for adjusting this elementvertically. The work in the form of a sheet of leather is adapted t-o rest on top of the bed or anvil 49 and the upper or grain surface of the leather 50 is adapted to be engaged by the glazing rolls 43 as such glazing rolls move from front to rear of the machine. Numeral 51 designates legs 'and secured to the top of such legs is a worktable 52, a portion of such table being cut away at 63 so as to enable the table to be placed under the endless chains 22 and the upper surface of the table lies in substantially the same plane as the upper surface of the bed or anvil 49. Referring to Fig. 1, it will be noted that the front end of the table top 52 lies in front of the shaft 18, this construction being such as to enable the use of a clamping means in connection with the table top 52. This clamping means comprises a member 53 formed integral with a substantially U- shaped member 54 pivotally mounted at the front end of the bars 45. Formed integral with one end of the U-shaped member 54 and extending rearwardly beyond the pivot point is an arm or lever 55, this arm having secured at its rear end the lower end of a coil spring 56. The upper end of this coil spring is secured to a pin 57 screwed into the side of the left hand member 16. The spring 56 is strong enough to pivot the U- shaped member 54 about its pivot points and to hold the clamping portion 53 against the top of the table 52 so as to clamp the leather sheet 50 against movement when the glazing rolls 43 engage with the grain side of the leather 50. Secured to the'inner face of the lever is a block 58 this block being adapted tobe engaged by a block 59 secured to a gear 60 rotatably en a stub shaft 61 secured to the outer face of the left hand bearing member 16. The gear 60 is adapted to be engaged and driven by a pinion 62 secured to the left hand end of the shaft 18. The

lll() pinion 62 and gear 60`are so proportioned with relation to the length of the chains 2O and the distance apart on such chains of the glazing blocks 43 that the block 59 on the gear 60 will only engage with the block 58 on the arm 54 when the glazing block 43 is not in engagement with the leather 5() and such blocks will be out of engagement with each other during all the time that the glazing block 43 is in engagement with the leather 50. The time during which one glazing block 43 is out of engagement with the leather and before the nextsucceeding block 43 is brought into engagement with the leather is suflicient to allow the operator of the machine to move the sheet of leather 50 to any desired posit-ion on the work table 52 and bed or anvil 49.

The operation of my machine is as follows, it being assumed that the apparatus has been constructed and assembled as above described and that it is desired to glaze'or iron the grain side of a sheet of leather 50. The operator turns power into the machine by shifting the belt 36 from the loose pulley onto a'tight pulley 34, whereupon the endless chains 22 are moved so as to carry the glazing blocks 43 in the direction of the arrow shown in Fig. l. The operator places a hide or skin 50 onk the tabler 52 and, during the period of time when no glazing block 43 is travelling along with the lower reach of the chains 22 and, therefore, the clamping member 53 is lifted up from the table top slides the sheet of leather 5() over on top of the bed or anvil 49. Vhen the next succeeding glazing block 43 moves with the chains 22 and into engagement with the grain surface of the leather 50, the blocks 58 and 59 will be moved out of engagement with each other and the spring 56 will force the clamping member 53 into engagement with the leather and hold the same Vfirmly against the table top 52. Assume that this is the situation in Fig. l and that the glazing block 43 is moving in the direction of the arrows shown. As soon as the glazing block 43 comes to the end of the sheet of leather 50, the pinion 62 and gear 63 being continuously rotating, the blocks 58 and 59 will be brought into engagement with each other, tilting the lever 54 and lifting the clamping member 53 olf the leather 50. Thisv releases the leather 50 and the operator moves the leather 50 to the desired position on the bed or anvil 49 before the next succeeding glazing block 43 comes into operative position. This sequence of operations may be repeated indefinitely on the sheet of leather or on succeeding sheets of leather.

`While I have necessarily shown and described the preferred embodiment of my inventionv somewhat in detail, it is to be understood that I may vary the size, shape, and arrangement of parts within wide limits without departing from the spirit of the invention.

Having thus described my invention, what I claim as new is:

l. In an improved glazing machine, a pair of endless chains arranged parallel to each other and with their lower reaches lying in the same horizontal plane, means for moving said lower reaches in the same direction and at the same speed, a work support or bed lying beneath, spaced apart from, and parallel to the lower reach of such chains, a worktable cooperating with said work support or bed, ya clamping means associated with said workable, glazing rolls mounted on and movable with said endless chains, means for maintaining the clamping means in operative relation to the work on the worktable, and means controlled by the endless chains for intermittently removing the clamping means from the table.

2. In an improved glazing machine, a pair of endless chains arranged'parallel to each other and with their lower reaches lying in the same horizontal plane, means for moving said lower reaches in the same direction and at the same speed, a woik support or bed lying beneath, spaced yapart from, and parallel to the lower reach of such chains, a worktable cooperating with said work support or bed, a clamping means controlled by said chains and mounted above said worktable, glazing rolls mounted on and movable with saidv endless chains, means for maintaining the clamping means in association with said table and in operative relation to the work thereon, and means for removing the clamping means from the table only when the glazing rolls are out of engagement with the work on the work support or bed.

3. In an improved glazing machine, a pair of endless chains arranged parallel to each other and with their lower reaches lying in the same horizontal plane, means for moving said lower reaches in the same direction and at the same speed, a work support or bed lying beneath, spaced apart from and parallel to, thelower reach of such chains and immovable with respect to said chains, a worktable co-operating with said work support or bed, a clamping means controlled by said endless chains and mounted above said worktable, glazing rolls mounted on and vmovable with said endless chains, means for maintaining the clamping means in association with said worktable, and in operative relation to the work thereon, and means for removing the clamping means from the table only when the glazing rolls are out of engagement with the work on the work support or bed. a

In testimony whereof, I have signed my name to this specification.

DANA E.- HARDING.

lGS

Images