US73814A

US73814A - bodley

Info

Publication number: US73814A
Authority: US
Publication date: 1868-01-28
Anticipated expiration: 1885-01-28

Description

@einen tates sttrnt @Hita PHILANDER. P. 4LANE AND JOSEPH T. BODLEY, OF CINCINNATI, OHIO.

Letters Patent No. 73,814, dated January 28, 1868.

IMPROVEMENT IN SAUWING-MAGHINES.

TO ALL WHOM IT MAY' CONCERN:

Be it known that we, PIIILANDER P. LANE and JOSEPH T. BODLEY, of Cincinnati, in thecounty of Hamilton, and State 'of Ohio, have invented a new and improved Cross-Out Sa'wingMachine; and we do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use thc same, reference being had to the accompanying drawings, and to the letters of reference marked thereon. i

This invention relates to a new and useful improvement in cross-cut sawing-machines, in which a reciprocating movement is communicated to the saw-carriage through the medium of a vibrating frame. l

, The invention consists in the application, to the saw-carriage or vibrating frame, either or both, of a counterpose, so arranged as to equalize the movement of the saw-carriage, as hereinafter set forth.

The invention further relates to an adjustable or graduated stop, for the purpose of limiting the backward or receding movement of the saw-carriage, to suit the length of cut required. In the accompanying sheet of drawings- Figure 1 is a side view of ourinvcntion.

Figure 2, a plan or top view of the same.

Similar letters of reference indicate like parts.

"A represents the' frame of the machine, which may be constructed of any suitable material, and in any proper manner, to support the working parts. Cast iron would be the preferable material. This frame, at its top, has two planed metallic ways, a a, on which a carriage, B, is tted, and allowed to slide freely back and forth. This carriage carries the mandrel C of a cross-cut saw, D, the latter being at one side of the frame A, as shown clearly in fig. 2. At one extremity ofthe frame A, near the bottom thereof, there is a counter-shaft, E, fitted in suitable bearings, 6 Z1; and on this counter-shaft there is placed loosely a vertical vibrating frame, F, which is allowed to work freely, and has two idle-pulleys, c c, placed in it, one above the other, in the same axial plane. -Thcse pulleys, c c, serve as guides for the driving-belt G of the saw, which belt passes around a driving-pulley, H, on shaft E, and around a pulley, I, on the saw-mandrel C, as shown clearly in fig. 1.

The vibrating frame F is connected, hy two stretcher-rods, J J, with the carriage B, the former maintaining a proper interval between the vibrating frame and the saw-carriage. This arrangement or combination of parts permits the saw-carriage to travel from end to end of the ways without affecting the tension of the belt.

A series of holes, nl, is drilled in' one of the ways a, at the end nearest the 'counter-shaft, in any one of r which holes a pin, e, is inserted, to serve as a stop, and limit the backward movement of the saw-carriage at any desired point, and said movement reduced to a minimum corresponding to the width ofthe stuff to be sawed.

The vibrating frame F, in consequence of working on a xed shaft or centre, would, under a constant or fixed propelling or driving-power, cause the movement of the carriage to he retained each way from a vertical position of the frame, the movement of the carriage gradually decreasing from said vertical position of the frameeach way to the end of the stroke, and, of course, increasing correspondingly from the end of each stroke to the centre of the same. As the saw must be fed through the material to be sawed at an exact and uniform speed, the unequal or varying amount of power required therefor, owing to the cause above stated, has hereto= fore detraeted much from the practical value of the machine, and the following means have 'beech devised to obviate that difficulty. Several devices, all equivalents, may be employed to effect the result.

The first consists of steel springs, K K, secured, one in each end of the frame A, as shown clearly in Iig. 1t Thecarriage B inipingcs against these springs, and the latter, as they are contracted, gather strength, which they give out at cach return-movement of the carriage. These springs equalize the mpvement of the carriage, causing it to work smoothly and easily, the result being similar or analogous to the ily-'wheelv of a crank.

The second device consists of a conical chamber, L, at the centre of frame A. This chamber contains a number of disk-weights, M, of graduated diameters, that lodge at different heights. i These weights have a cord, N, passing centrallyr through them, the lower weight being attached to the cord, the length of which is such that the lower weight shallrcst for an instant as the frame F passes its vertical position, all the other Weights having lodged successively as the carriage approached the centre of its travel, and, as it moves from said position in either direction, will pick up the weights consecutively, the cord N being attached to the carriage B, and passing between two sheaves, ff, on the frame A. These weights, it will be seen, act, at the commencement of each stroke, progressively, the full power ofall the weights acting at the commencement of each stroke, and the power gradually diminishing as the weights consecutively rest in the chamber, all the weightsresting therein whenA the frame F reaches a vertical position, as before stated.

The third device consists in having the lower part of the frame F, below the counter-shaft, constructed sufficiently heavy to-form weights or counterpoise's, g g, shown in both figures. y

The fourth device consists in having a weight, O, attached to a toggle, P, one arm, 7L, of which is pivot-ed to the carriage-B, and the other end to the frame at its centre.

The `united length of the two arms h 7L exceeds a trifle the length of one-half` the movement ofthe carriage B.

When the frame F reaches a` vertical position, the toggle merely supports the weight O,the latter having no action on the carriage; but, as the frame F moves from the vertical position in either direction, thc toggle P assumes a. straightened position, in which the weight O has a power to act upon the carriage B, the greatest effect of the ,weight being when the carriage is at the extreme end of its stroke, and. gradually decreasing as the carriage reaches the centre oi' its strokeormovement.

Having thus described our invention, we claim as new,

In ,a cross-veut sawing-machine, the combination of a reciprocati balance, constructed and operating substantially as described.

and desire to secure by LettersPatcnt ng saw-carriage with a graduated counter- PHlLANDER 1. LANE, JOSEPH T. BODLEY.

Witnesses:

THOMAS G. Srnsnon, BENJ. C. TRUE.