US45274A - Improvement in frames for saws - Google Patents

Improvement in frames for saws Download PDF

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US45274A
US45274A US45274DA US45274A US 45274 A US45274 A US 45274A US 45274D A US45274D A US 45274DA US 45274 A US45274 A US 45274A
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Prior art keywords
saws
frame
improvement
frames
sawblade
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23DPLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
    • B23D51/00Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends
    • B23D51/08Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools
    • B23D51/12Sawing machines or sawing devices working with straight blades, characterised only by constructional features of particular parts; Carrying or attaching means for tools, covered by this subclass, which are connected to a carrier at both ends of devices for mounting straight saw blades or other tools for use with tools, dealt with in this subclass, which are connected to a carrier at both ends, e.g. bows adjustable in length or height
    • B23D51/125Blade tensioning means

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).
US45274D Improvement in frames for saws Expired - Lifetime US45274A (en)

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US45274A true US45274A (en) 1864-11-29

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050037424A1 (en) * 2003-08-13 2005-02-17 Schembri Carol T. Selectable length linear microarrays
US20050084867A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Hybridization and scanning apparatus
US20050083781A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Methods and apparatus for mixing of liquids
US20050084866A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Methods and apparatus for sample mixing

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050037424A1 (en) * 2003-08-13 2005-02-17 Schembri Carol T. Selectable length linear microarrays
US20050084867A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Hybridization and scanning apparatus
US20050083781A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Methods and apparatus for mixing of liquids
US20050084866A1 (en) * 2003-10-15 2005-04-21 Caren Michael P. Methods and apparatus for sample mixing

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