IMPROVEMENTS IN HORSE-SHOES AND ATTACH- MENTS THEREFOR."
Year: 1877

page_text: LETTERS PATENT to George Thompson Atkinson, of Torquay, in the County of
Devon, for the Invention of "IMPROVEMENTS IN HORSE-SHOES AND ATTACH-
MENTS THEREFOR."
PROVISIONAL SPECIFICATION left by the said George Thompson Atkinson at
the Office of the Commissioners of Patents on the 16th February 1877.
GEORGE THOMPSON ATKINSON, of Torquay, in the County of Devon. "IMPROVE
MENTS IN HORSE-SHOES AND ATTACHMENTS THEREFOR."
The improvements consist in so treating horse-shoes as made, or to be made for
the purpose, by means of improved key blocks, that they (the shoes) may more con-
veniently than heretofore receive, hold, and allow of the extraction of hard, soft, or
the improved combined hard and soft calks, talons, and cross bars formed in such
manner that the use of fasteners passing through said calks, talons, and cross bars
is dispensed with, whereby they may be more readily inserted and extracted (when
the shoe is in use or otherwise) than at present.
Also in the use in conjunction with said key blocks of frames or carriers for
holding and securing soft or combined soft and hard calks, talons, and cross bars.
The improvements also embrace the making calks, talons, and cross bars of hard
and soft materials combined sandwich fashion or otherwise.
The calks are secured by dowelling, dovetailing, chamfering, or recessing receptacles
in the shoe in which the calks may be constructed to slide or fit, and be held by
means of the improved key block, which is formed of any convenient shape and
material, with surfaces made to correspond more or less with the receptacles in the
shoe; or the calk, when desired, may be first held in a carrier frame or sheath of
hard material, and then made to slide or fit in the shoe receptacle, and held as
above.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said George Thompson Atkinson in the Great Seal Patent Office on the
15th August 1877.
GEORGE THOMPSON ATKINSON, of Torquay, in the County of Devon.
MENTS IN HORSE-SHOES AND ATTACHMENTS THEREFOR."
"IMPROVE-
The improvements consist in forming grooved recesses in horse-shoes, as at
present made, or to be made, for the purpose, so that said shoes may more con-
veniently than heretofore receive, hold, and allow of the extraction of moveable
calks, talons, and cross bars, with overlapping shoulders or otherwise, or dummies,
(all of which are herein-after called calks), and the securing such calks in their
places by means of key blocks in such manner that the use of fasteners passing
through or into said calks is dispensed with, whereby said calks may be more
readily inserted, firmly held, and extracted when the shoe is in use or otherwise.
The Drawings hereunto annexed will serve to illustrate a convenient mode of
carrying out my Invention, but I do not limit myself to the precise modes therein
shown, as they may be varied without departing from the nature of my Invention.
Fig. 1 is a plan of underneath part of shoe; Fig. 2, sectional elevation through
A, B, in Fig. 1; Fig. 3, section through G, H, in Fig. 1; Fig. 4, section through
C, D, or E, F, in Fig. 1.
Fig. 5 is a side view of calk.
In all the Figures like letters represent like parts.
K is the shoe; I, recesses cut therein, with the sides thereof partly chamfered or
grooved, but with a part around M. left plain; L are various forms of calks made
with grooves and such like, formed to slide on and be held by the corresponding
grooves in the recesses I, as shown; M are key blocks or locking pieces. One or
more grooved recesses having been made in the shoe, one or more convenient shaped
calks are made with grooves to fit therein, and are introduced through or by means
of the non-grooved part of the recesses, and then slided in or on the grooves of the
said recesses. The key block M is then introduced into its non-grooved socket or
receptacle, and fastened therein by a pin, bolt, or screw as at O, with any convenient
head, passed from the outside or inside of the shoe; N is a lift recess.
The block M may be secured by being furnished with a locking device similar to a
railway carriage door lock, the bolt being shot by means of a moveable key.
I claim as my Invention,―
1. The forming recesses in horse-shoes, grooved or partially grooved for holding
calks correspondingly grooved to be slided in the said recesses, substantially as
described.
2. Securing calks in horse-shoes, in grooved or partially grooved recesses, or
in recesses or orifices generally, by a blocking piece or pieces furnished with pin,
bolt, screw, or lock fastener, substantially as described and for the purposes set
forth.
In witness whereof, I, the said George Thompson Atkinson, have hereunto
set my hand and seal, this Fourteenth day of August, in the year of our
Lord One thousand eight hundred and seventy-seven.