US41397A

US41397A - Improvemeni in sawlng-machines

Info

Publication number: US41397A
Authority: US
Publication date: 1864-01-26
Anticipated expiration: 1881-01-26

Description

P. J.Y RICHMOND.

SAWING MACHINE. Y

I PATBNTBD JAN. 26, 1864.

iirewood, &c.

` UNTTED .STATES PATENT OEEIQC'E.

F; .1, RCE'MCND,oraasHEonD, CONNECTICUT.

|MPROVMENr."ifm;l sAw-l Nef MACH INES.

'Specification forming part of Letters Patent- No. L1h39?, dated January 26, 1864'.

To all whom t may concern..- t V'Be it known that I, F. J. RICHMOND, of Ashhereby declare that the following is'a full, clear, and exact description. of the same,

reference being had to the accompanying drawings; making apart of this specification,

in 'which-4 Figure 1` is a side view of my invention;

v Fig. 2 a plan or top view ofthe sanne.A-

Similar letters of reference indicatey corre- I spondi'ng parts in the two figures. i This invention. relatesto `a new andl improved crosscut-sawing machine .for sawing To ena-ble those skilled inthe art to fully understand and construct my invention, l will proceed to describe it.

A represents a framing, whic'nniay be constructed in any proper manner to support the working parts, and B is 'a driving-shaftplaced in the upper part of the framing' and having a bandwheel, C, upon it.

D is a shaft at one end of the framing A,

haviuga crank, E, vat each end of it, one crank having an opposite position to the other. The shaft D has a pulley, F, upon it, around which and the wheel C a belt, G, passes, said belt communicating motion from the shaft .B to the shaft D.

HTI represent pitniemwhcli are connected vat one end to the cranks E E and connected at the opposite ends to slides I I, to which the saws J J are attached. These saws are-fitted and strained within suitable frames, K, and the slides I I work between guides a, which are attachedgto swinging bars L L, the; latter being secured at one end, one to each -side of the fra-ming A,by pivots or pins b, on which they are allowed to work or swing freely.

The opposite ends of the bars L have tenons c formed on them, and said tenons are `fitted in grooves made in segments'M, which are attached to the sides `of the framing, said segments being parts of circles, of which the pivots or pins b are the centers.

On the top of the framingA there is placed I a sha-ft, N, having arms O O attached to it, the

outer ends of which are connected by rods d d to the swinging bars L L. y

v `The shaft N has-"a lever, P, attached to it, by which the shaft N may be turned and the bars L and saws J raised when desired, the lever I? being held by a catch, Q.

.To the end of the framing A,where'the saws J work, there are secured two inclined bars, e e, which, inconuection with the adjoining part of the framing,- form a buck to hold the log to be sawed; and R is a lever, the ylo'wer end of which is lfitted loosely on a rod or bolt. f, which -secures the bars e e to the. framing. Thisv lever R has af curved metal bar or jaw, S, attached to it at its lower end, and to said lever there is also attached by a pivot a notched bar, T,whicl1 catches against a plate, U, on the framing A When a log (shown in red) is placed in the bars c e, the lever R is pressed backward, so` that the curved bar or jaw S will bindagainst'tile log and hold the same rmly in` position, the notched har T ,and plate U holding the 'lever R. The saws .J J feed themselves to their work by their own gravity in connection with that of the bars L, and the teeth of the saws have a rakin opposite directions and cut with an inclined stroke.'

The crankshaft D .may be provided with a iiy-wheel, D'.

This machine operates with but little friction, and performs its work rapidly and well with but a small expenditure of power.

Having thus described my inventiomwhat I claim'as new,` and desire to secure by Letters o Patent, is-

The arrangement of the swinging bars L L,

slides I I, crank-shaft D,- shaft-N, arms O 0,-V v segments M, and saws J, in combination with the curved jaw S, attached levereR, buck e e, v'pivoted notched bar T, and

herein shown and described. l

F. J. RICHMOND.

'Witnessesz Y D. THURsToN, A E. C. CARPENTER.

plate U, all as