US192480A

US192480A - Improvement in scroll-sawlfmg machines

Info

Publication number: US192480A
Authority: US
Publication date: 1877-06-26
Anticipated expiration: 1894-06-26

Description

JOHN S. BAKER, OF NORBISTOWN, ASSIGNOR OF ONE-HALF HIS RIGHT TO JOHN J. MOFADDEN, OF PHILADELPHIA, PENNSYLVANIA.

IMPROVEMENT IN SCROLL-SAWING MACHINES.

Specification forming part of Letters Patent No. H92,&80, dated J one 26, 1877 application filed April is, 1877.

To all whom it may concern:

Be it known that I, JOHN S. BAKER, of Norristown, in the county of Montgomery and State of Pennsylvania, have invented certain new and useful Improvements in Scroll-Saws and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification, in which- Figure l is a longitudinal vertical section of my invention; Figs. 2 and 3, detail views.

This invention has relation to scroll-saws; and consists, first, in constructing the stationary arms which support the vibrating levers with 1 slots extending their entire length, and providing them with tubular sockets to receive the saw-heads, having vertical slots in their rear sides communicating with the slots in the stationary arms, so that the levers may be connected directly to the heads without the intervention of links; secondly, in the coinbinatio 11,with the longitudinallyslotted horizontal arms and the tubular sockets communicating therewith, of the levers,

the saw-heads, and the adjusting-screw connecting said levers at their rear ends, all as hereinafter described and claimed.

Referring to the accompanying drawings, A designates the frame or supports of a scrollsaw table, B. O is a U shaped frame attached to said frame or table, and having its arms 0 c, which extend horizontally, slotted vertically, and through their lengths from end to end, as shown at d. One of said arms is located below, and the other above, the table. At their forward or free ends the arms 0 c terminate,'each in a vertical socket, E E, respectively, slotted in the rear to correspond with the slots at of the arms 0 0. Through, or within, these sockets are arranged the elongated reciprocating saw-heads b b, holding between them the vertically reciprocating scroll-saw D. F F are a pair of lovers pivoted to the arms 0 c, and passing through the slotted portions thereof, and into recesses formed at f f in the heads 11 b. At their rear ends, which curve toward each other, the levers F F terminate in horizontal projections ff, through holes in which pass the connecting and adjusting screw-rod G, holding on one end the thumb-nut g. By the adjustment of this rod the levers F F are brought close together or moved apart at their rear ends, and the tension of the saw thereby regulated.

The ends of the saw lit in recesses in the ends'of the sliding heads I) b, in which they are held by means of the milled eccentrics H.

-I isa horizontal shaft arranged transversely below the table B, and provided with a crankwheel or pulley, K, receiving rotary motion from any suitable source.-

The lower lever F is formed or provided with a pendant, L, terminating in a horizontal bar, 1, which is slotted longitudinally to receive the crank-stud l projecting from the wheel K. As the wheel rotates a vibratory or reciprocating movement is given to the lovers through the connection just described.

Having described my invention. I claim 1. The arms 0 0, slotted their entire length, and formed or provided with tubular sockets E E at their ends, having vertical slots in their rear sides communicating with the slots in arms 0 c, for the passage of the vibrating arms or levers F F, substantially as shown and described.

2. The combination of the longitudinally slotted horizontal arms 0 0, having the tubular sockets E E communicating with slots in said arms, levers F F. heads I) b, and adjusting screw G, connecting said levers at their rear ends, substantially as shown and described.

In testimony that I claim the foregoing I have hereunto set my hand this 11th day of April, 1877.

JOHN S. BAKER.

Witnesses SAML. J. VAN STAVOREN, JOHN RODGERS.