US45274A

US45274A - Improvement in frames for saws

Info

Publication number: US45274A
Authority: US
Publication date: 1864-11-29
Anticipated expiration: 1881-11-29

Description

FFICE.

THOMAS D. ROBERTS, OF MIDDLETOWN, NEW YORK. l

IMPROVEMENT IN FRAMES Foa SAWS.

Specification forming part of Letters Patent No. 45,27%, dated November 29, 1864.

To all whom it may concern.,-

Be it known that l, THOMAS D. ROBERTS, ot' Middletown, in the-county of Orange and State of New York, have invented a new ard useful Improvement in Hand-Saws; and I do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying` drawing, making a part of this specification, said drawing being a side view of my inven tion.

This invention relates to an improvement in that class of hand-saws in which the sawblade is strained in a wooden frame; and it consists in constructing the frame of two pieces of wood with a central bar, the saw-blade being., secured in the two main parts ot' the trame, and all so arranged that the trame may l.

be constructed at 1nuch less cost than the ordinary frames and also be more durable.

To enable those skilled in the art to fully understand and construct my invention, I. will proceed to describe it.

A represents oneportion or side of the frame, which is ot' slightly-curved form and constitutes the handle ot' the same.

B is the other part ot' the frame, which is composed of a straight piece ofwood, steamed and bent in curved form, as shown in the drawing, its upper end being secured to the upper end ot' A by a pivot, a, and its lower end having one end of the sawblade O secured to it, the other end of the saw-blade having a s brew-rod, b, attached to it which passes through the part or side A of the frame, and has a thumb'nut D on its outer end.

E represents a central wooden bar, the ends ot' which are framed into the parts A B of the frame, but are not secured therein by pivots or i'astenings of any kind, tenons bein g formed on the ends of E, which are fitted loosely in moriises in A B.

The part or side A of the frame extends some distance down below the saw-blade G, in order to serve as a handle, and it will be seen that by screwing up the nut D the saw-blade will be strained or brought to a proper state of tension. By this arrangement it will be seen that the traine may be very cheaply constructed and still be very durable. The parts of the frame may all be straight grain, as the curves are not. sawed out ot aplank, but sawed straight and then steamed and bent to the desired shape.

Having thus described my invention7 what I claim as new, and desire to secure by Letters Patent, is-

The combination of the frame A B, consisting of two pieces connected by a pin at a, the

cross-bar E, the sawblade O, and the screwbolt b, attached to the end ot' the sawblade, and receiving a thumb nut, D, bearing upon the handle A, all as herein shown and described.

THOMAS D. ROBERTS. Vitnesses: i

M. M. LIVINGSTON, GEO. W. Rini).