Improvements in Rasps.
Year: 1896

page_text: Date of Application, 11th May, 1896-Accepted, 27th June, 1896
COMPLETE SPECIFICATION.
Improvements in Rasps.
We, WILLIAM SHAW, of 309 Forest Avenue West, New York, U.S.A.,
HENRY ALBERT PARKIN, of 1080 Warren Avenue West, New York, U.S.A.,
and BERTRUM CHRISTOPHER MCRAE, of 36 Lincoln Avenue, New York,
United States of America, Manufacturers, 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 :-
This invention relates to new and useful improvements in rasps, and consists in
the construction and arrangement of parts, as hereinafter fully set forth and pointed
out particularly in the claims.
The object of the invention is to provide a rasp of simple construction; one that
shall be cheap to manufacture; highly efficient for the purpose of dressing the hoofs
of animals preparatory to shoeing; and one wherein the blades may be removed
and sharpened with great ease, accuracy and rapidity, and replaced in said rasp,
rendering it as good as new. Which object is attained by the construction and
arrangement of parts as hereinafter fully set forth and pointed out particularly in
the claims, and illustrated in the accompanying drawings, in which-
Figure 1 is a top plan of our improved rasp,
Fig. 2 is a vertical section as taken on line 2-2 of Fig. 1,
Fig. 3 is a perspective view of one of the plates with a shank thereou for the
accommodation of the rear handle,
Fig. 4 is a plan view of the plate used at the forward end of the rasp, said
plate being also provided with a shank upon which is to be mounted, the
forward handle,
Figs. 5 and 6 are like views showing the plates that are employed in the rasp
between the plates shown in Figs. 3 and 4, and
Fig. 7 is a perspective view of the washer used for separating the plates or blades
of the rasp, and
Fig. 8 a side view of one of the headed rods used in the construction of a rasp
according to our invention.
Referring to the letters of reference, A, A' designate rods, of any suitable gauge
and length, having at one end a head, and at the other end a threaded portion, and
fitted thereto, are suitable nuts a, a¹.
B designates an angled plate, one side of said angle being beveled to form a
cutting edge b, and the other side of said angle being extended into a shank b¹,
for the accommodation of a handle B', said plate being provided with a
perforation d¹¹.
C indicates a plate designed to be used at the forward end of the rasp, having a
shank c formed integral therewith, said shank adapted to be received by a suitable
handle C. Said plate C being provided with apertures c' and having its lower
edge beveled to form a cutting edge C".
D, D' designate plates or blades provided with apertures d, d' therethrough,
the lower edges of said plates being beveled to form cutting edges, as shown
at E, E¹.
F, Fig. 7, designates a sleeve or washer, the length of which is about equal to
the gauge of the plates D, D¹, B and C, said sleeve F being provided with a
central opening extending centrally therethrough.
The apertures c, d, d' d and the opening through the sleeve F, are all of the
same diameter and adapted to snugly receive the rods A, A'.

page_text: The backs of the blades or plates D, D₁ are preferably depressed, or hollowel
in, for the purpose of lightening their construction, and improving the appearance
of the rasp, when the parts are assembled, and the lower edges of said plates are
provided with notches or indentations H to lighten said plates, and to form cutting
corners, as shown in the several views at h.
In assembling the parts of the rasp, the plate B with its handle B', and the
rods A, A passed through its apertures d" until the heads on said rods come in
contact with the back face of said plate, as shown in Fig. 2 then a sleeve or
washer F is placed over each of the threaded ends of said rods and moved along
in the direction of the plate B until they come in contact therewith, when a plate,
as D', is taken, and the rod A passed through one of its apertures d', at the same
time the other rod is passed through the opposite aperture, care being taken to so
pass the rods through the apertures d, d of the blades D, D' that the bevels
formed on the lower edges of said plates, will always be on the side nearest the.
bandle B', as clearly shown in Fig. 2, then a sleeve F is passed along each rod
until it comes in contact with said plate D', when a plate, as D, is passed along
said rods, in the manner set forth, and so on until the rasp is of the desired length.
The second to the last plate to be placed on the rods, is the one shown at C in
Fig. 4, with its handle C' thereon, then a sleeve F on each rod, and finally a plate
as D. This plate C is set in from the end of the rasp, so that the lower end of
the handle C will not project over the end of the rasp, as will be understood.
When the plates B, C, D, D' and sleeves F have all been strung upon the rods,
in the manner set forth, the nuts a, a¹ are screwed onto the threaded ends of the
rods A, A placing tensile strain on said rods and tightly compressing the plates
and washers, as will be understood. Should the ends of the rods project very
far through the nuts a, a', they may be clipped off, to add to the appearance
of the rasp.
It will be seen that a rasp made after the manner set forth, and of the plates
and washers described, is formed that may be used with facility and efficiency for
dressing the hoofs of horses, preparatory to shoeing; for dressing the meeting end
of pulley-belts before splicing; for dressing the faces of wootl, or other materials,
and for other similar purposes.
A great advantage in the use of the plates described herein, is that, in
sharpening, they may be more easily and perfectly held while grinding, for the
former rasps of this class usually have a single opening through the plates, and it
has been extremely difficult to so hold the plates that their edges may be perfectly
ground, and it is evident that if the edges are not squarely ground, when the plates
are assembled in the rasp, the rasping surface of the tool will be uneven, conse-
quently the utility of the tool, after once thus being sharpened will be greatly
reduced. With the apertures through the blades as herein shown, said blades are
more easily held with the cutting-edge thereof true to the grinder. If desired,
however, said rasp may be sharpened while the blades are in place in the tool, by
use of an ordinary angled-file.
Having now particularly described and ascertained the nature of our said
invention, and in what mauner the same is to be performed, we declare that what
we claim is-
CLAIM
An article of manufacture, comprising the headed rods, the plates or blades,
having cutting edges, mounted to snugly fit on said rods, the washers between said
plates, said washers also mounted on said rods, and the plates having the operating
handles mounted thereon, all adapted to be closely united by means on the ends of
said rods, when arranged as shown and described.
CLAIM

page_text: the plates and washers mounted on said rods between said shanked plates, and means
for locking them in place upon said rods, substantially as set forth.
for locking them in place upon said rods, substantially as set forth.
CLAIM 3.
A rasp comprising the headed-rods, angled plate B, provided with a handle, the
series of plates D and D' strung upon said headed rods, and means for securely
holding the several plates upon the rods, all arranged substantially as shown.
Dated this 11th day of May 1896.
ALLISON BROS.,
Agents for the Applicants.