Improvement in Adjustable Saw Filing Guides.
Year: 1897

page_text: Date of Application, 18th May, 1897-Accepted, 17th July, 1897
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COMPLETE SPECIFICATION.
Improvement in Adjustable Saw Filing Guides.
I, CHARLES REICHERT, of 931 W. 8th Street, Chester, in the County of Delaware,
and State of Pennsylvania, United States of America, Cabinet-Maker, do hereby
declare the nature of this invention and in what manner the same is to 'be
performed, to be particularly described and ascertained in and by the following
statement: -
My invention has relation to adjustable saw filing guides, and the object is to
provide a simple, cheap and effective device for guiding the file while sharpening
an ordinary hand saw. To this end the novelty consists in the 'construction, com-
bination and arrangement of the same as will be hereinafter more fully described
and particularly pointed out in the claims.
In the accompanying drawing the same reference characters indicate the same
parts of the invention."
Figure 1 is a perspective view of my adjustable saw filing guide as it appears
in operation;
Figure 2 is a longitudinal section through one of the clamps; and
Figure 3 is a transverse section of the same.
1 represents an ordinary three cornered file provided with the usual handle 2.
3 and 4 represent adjustable parallel clamps, and as they are identical in con-
struction, the description of one will answer for both. These clamps comprise a
frame 5, formed 'with integral stationary blocks 6-6, and a longitudinal slot 7,
having converging walls 8 and 9. 10 represents an enlarged rectangular recess
formed midway in the frame 5, and in it is detachably secured, by a screw 11, a
stationary jaw 12, provided with a V-shaped groove 13.
14 and 15 represent adjustable jaws, one of which is located on each side of the
stationary jaw, and these adjustable jaws are provided with an integral dovetail
tongue 16, which permits a free lateral movement of said tongue 16 in the slot 7
between the converging walls 8-9, and the upper face of each sliding jaw is
formed with a V-shaped groove 17, which receive the outer ends of the parallel
three cornered guide bars 18 and 19, the extreme ends of which, are formed with
flanged heads 20-20 to prevent their accidental displacement in the clamps 3
and 4.
21-21 represent transverse adjusting sorews mounted in the stationary
blocks 6-6, which engage the movable jaws 14-15 to permit their parallel adjust-
ment with the central fixed jaws 12-12. These adjusting screws 21-21 are each.
provided with a projecting head 22 and a shoulder 23, which abuts against the
outer end of the block 6, and a collar 24 is secured to the screw contiguous to the
inner face of said block to permit the rotary movement of the screw without
allowing any end play thereof.
25 represents a top plate, which bears upon the horizontal face of the file to
rigidly clamp it in place in its fixed jaw 12. 26-26 represent thumb screws
passing through the outer ends of said top plate and extending into the blocks 6-0
to adjustably secure the plate in place. A set-screw 27 is also secured centrally

page_text: in the plate 25, and its inner end bears against the face of the file to assist in
rigidly securing it in the fixed jaw.
The operation of the device is very simple, as will be seen from the following
explanation:
The file is first rigidly secured in the clamps 3 and 4, as above described, and the
parallel guide bars 18-19 adjusted to correspond to the contiguous V-shaped
spaces between the saw teeth on each side of the space in which the file is operating.
All that is necessary then is to hold the file guide horizontal and diagonal to the
line of teeth, and reciprocate the file in the usual manner.
The guide bars travelling in the 'adjoining 'spaces preserve the proper alignment
of the file, and cut or sharpen the teeth in an even and regular manner.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
―
1. A saw filing guide, comprising the clamps 3 and 4, 'each provided with a fixed
and a movable jaw, and a top plate adjustably secured to each clamp, in combina-
tion with a triangular guide bar adjustably secured between said clamps 3 and 4,
substantially as and for the purpose set forth.
2. A saw filing guide, comprising the clamps 3 and 4, provided with the fixed
jaw 12, having the V-shaped grooves 13-13, and the lateral adjustable jaws 14--15
formed with the V-shaped grooves 17-17, the adjustable top plate 25, in combina-
tion with the parallel triangular guide bars 18 and 19, provided with the flanged
heads 20-20, and adapted to be adjustably secured in said adjustable jaws 14-15,
substantially as and for the purpose set forth.
Dated this 18th day of May 1897.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.