US70382A - Improvement in machines foe making blind-slats - Google Patents

Description

@uiten-gratta stwt @ffice FRANCIS IV. XVIII-TE, OIf NCRVVICH, CONNECTICUT.

Letters Patent lVo. 70,382, dated October 29, 1867. i

IMPROVEMENT IN MACHINES FOR MAKING BLIND-SEATS.

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y TO ALL WHOM VIT MAY CONCERNE Be it known that I, FRANCIS W. WHITE, of Norwich, in the county of New London, and State of Connectient, have invented a new and useful Maehinefor Making Blind-slats; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings, whichare made a part of this specification.

'The subject of thisinvention is an automatic machine for making blind-slats, embodying a novel combina-A tion of devices whereby the plank is out into sections, and "such sections divided up into complete slats with planed surfaces and gudgeons cn their extremities.

Figure 1 is. a perspective View of my improved machine.

Figures 2 and are sectional views on the opposite sides of the plane, indicated by theline A-B, iig. 1.

Figure LLisadetached view,`illustrating modifications of the planing and severing cutters.

Similarletters of reference indicate corresponding parts in the several figures.

In fig. 1 is clearly exhibited the main frame, in which the several operating parts are mounted. A is the driving-shaft, from which the working parts derive their motion through the medium of belts and pulleys. B B- arc parallel ways, between' which the rough plank or material is first placed, one of said ways being rendered self-adjustingiby theconnecting-rodsb and springs b', to accommodate planks of different width. C C are adjustable guide-ways, joining theways B B at a right angle, and serving to confine in position the blocks or sections which are sawed from the plank and 'fed to the'action of the several devices, by which they are converted into slats, as presently explained. The plank is placed within the ways B B', and fed along until its motion is arrested by the contact of its extremity with the guide-way C. At the conclusion of this movement the end of the plank acts upon the end c of the shipper cI and upon the rod c2, which is attached by the bellcrank lever c3 to the redf, ,the parts c c2 being thus forced outward from the`way el, through which they.are caused to protrude at other times by the pressure of suitable springs. rIhe effect of the plank striking c is to actuate the shipper c1 so as to throw the belt d, which drives feed-rollers C, from the fast pulley El on to the loose pulley E2; thus the motion of the .feed-rollers C is suspended for the time being. The striking of the rod c2 by the end of the plank serves to advance the rodf so as to make its forked end, f', hold the attachment e on the end of the lanyard orline E in position to be caught by the claw F on the rack-frame G, when the latter moves across the spaceat the terminus of the ways C C. The attachment e consists of two small metallic spheres connected by a short bar, and employed to enable the claw F to readily take hold of the end ofthe line E. When the line E is thus connected to the traversing-frame G, it serves to give motion` to the railway saw-carriage D', which carries the saw D across the waysB` B', a section or block being thereby sawed from the end of the plank. The saw is rotated by the band 6 from a pulley, II, which is'journalled in the hinged frame 7, which enables said pulley to `adjust itself vertically to maintain the requisite tension upon `the band 6, and allow the latter to accommodate its position to that of the saw D, 'as the latter moves forth and back over the ways B' B. The motion of 'the rack-frame Gr is -reversed as soon as the saw D has passed transversely through the plank, and the claw Filets goiof the lanyard attachmente during this reversed movement of the rack-frame to allow the saw, with its carriage, to be returned to its first position by the gravit-ating movement of the pulley H. `'.Ihepulley H is driven by the band-4 from the pulley 3 on the shaft 5, which is rotated by a band, 2,. which is driven by the pulley 1 on the driving-shaft A. l p

"The above-described operation of the saw audits accessories is repeated at proper intervals. t The section -or'block` cut from the end of the plank by the saw D is transferred to the feed-roller I by the pressure of a spring, g, and when such block is moved fairly out of the ways B B', and into ways C C by said feed-roller I, the shipper ac', being relieved from pressure, is actuated by its spring, so as to throw the belt d ou to the fast pulley E', and thereby put the feed-rollers C in motion, when the plank is advanced to C', and another block 'sawed off by D, and so the operation of C and D progresses. The feed-roller I receives an intermitting motion fromtheratc'het-wheel-t and ratchet-rack 71.', suitably connected with the traversing rack-frame G- G. Each motion of roller I feeds the block forward the thickness of a slat, and during the interval of rest of the roller I the rotary tubular cutters z'z'are successively forc'zedintofthe` opposite sides of the block, said cutters forming annular openings, and leaving the gudgeoeswhich project from the ends of the elat. The cutters t" are forced into the block by levers` J J, the upturnedfree extremities of which are acted upon by pins a a projecting from the traversing-frame G, springs a serving to retract the levers at the completion of their penetrating movement. The shafts of the cutters z'z have fast and loose pulleys, and are rotated by a band, 8, from the saw-shaft 9. L L L L are saws, which cut vertically through the block to remove the Wood surrounding the gudgeons, and leave the shoulders on the extremities of the slats. The blocks are fed by the roller I to the saws L after having been subjectedto the action of the rotary cutters The saw-shaft 10 is driven by bands 12 from the shaft 5, and the motion of shaft 10 is communicated to shaft 9 by a band or bands,.13. The foremost block in the ways C C is pushed. along beyond the saws L by the blocks subsequently cut from the plank. When the outer extremity of the foremost block reaches the slots c6 in the ways C C', the block comes to rest, and the frame Gr being then thrownA into gear, moves in its path transversely of the ways C C, and brings the revolving cutters le c into action. The cutter c planes and slightly bevels the lower portion of the front of the block. The motion of frame Gr is then reversed, and the block fed forward the thickness of a slat, when both the cutters c c are brought to act upon the block simultaneously, the lower cutter serving to partially sever a slat from the block, and to plane and bevel the lower portion ofthe back of such slat, as well as the lower portion of the front of the succeeding slat, and the upper cutter serving to plane and bevel the upper portionof the front of the slat. The block being again fed forward, the upper cutter 7c acts to plane and bevel the upper portion of the back of the slat, and to completely sever the slat from the block, which latter is converted into a number of slats by these successive operations. While the slat is under the action of the cutter lc for completion, its upper and lower edges are embraced by the sliding rests u o, which follow in the wake of the cutters, and serve to sustain the slat while being cut. The reversal of the motion of the rests v u releases the severed slat, which is delivered at the ends of ways C C. A band, 14, from the main shaft A, drives the pulleys ZZon the shafts of the revolving cutters 7c c, and said band is held tightly upon its traversing pulleys by the movable and gravitating pulley N, which is journalled in the hinged arm P. The frame Gr is moved in both directions by the band 15, which is shifted from one to the other of the pulleys M M" by the shipper-rod O, iig. which is actuated by the main frame through suitable connections at the conclusion of each movement. The pulleys M M are respectively adapted to impart motion to'the pinions Q Q, and these in turn engage with the respective racks Gr1 G2, to give to the frame G a reciprocating motion.

In lieu of the cutters 7c k', represented in figs. 2 and 3, I proposeto employ reciprocating or rotary cutters of the form shown in fig. 4, each of which is adapted to act upon a plurality of slats to finish their sides and edges simultaneously.

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

1. Cutting blind-slats from a plank, and finishing the same automatically atlone operation by the mechan- I ism substantially as herein set forth.

2. The railway-saw D, in combination with the connecting-mdf, to throw it into operation by the contact of the plank while passing through the parallel ways, as shown and described.

3. Cutting the tenons ofthe slat in the block by mechanism, substantially as described.

4. Cutting the shoulders of the slats in the block by mechanism, substantially as described.

5. The cutters c and 7c', formed to it the space `between two slats, and employed to finish their sides and edges, substantially as shown and described. v

6. The rests or followers e, for holding the slut-s while being cut from the block, as described.

F. W. WHITE.

Witnesses:

S, T. IIoLBnooK, Guo. Fuso. LATnnor.

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