Improvements in Racket-presses, also Applicable for Analogous Purposes.
Year: 1892

page_text: Date of Application, 24th Feb., 1892
Complete Specification Left, 22nd Dec., 1892-Accepted, 28th Jan., 1893
PROVISIONAL SPECIFICATION.
Improvements in Racket-presses, also Applicable for Analogous
Purposes.
We JAMES M'HARDY Scientific Expert & WILLIAM ROBERT MCHARDY
Engineer, both of Fairfax House Chiswick and WALKER GEORGE DE FORGÉS
GARLAND of East Molesey Manufacturer do hereby declare the nature of this
invention to be as follows:-
:-
This invention, which relates to improvements in racket-presses also applicable
for analogous purposes, consists mainly in providing a fitting, sliding upon a suitable
bed or bar, in such a manner that, when the strain is applied at the working point,
the said fitting will hold its position on account of the skew friction arising from
the proportions of the parts. This said moveable fitting may be worked with or
without a spring, or any of the parts may have sufficient elasticity to act as a spring.
At a point at a suitable distance from the junction of the said fitting with the
aforesaid bed or bar upon which it slides, a lever is inserted which is, in a manner
hinged upon the said fitting. To this said lever a wheel or roller is added at any
convenient point away from the fulcrum. This said roller practically forms a
rolling end to the said lever, such as will give a thrust for the purpose of pressing.
The motion and direction of the said lever will be regulated by such stops and
joints as may be required. The frame-work and the press may be of any suitable
construction, and the thrust of the said roller pointed lever may be in the hori-
zontal, the vertical, or any convenient direction. In all cases the thrust will be in
the direction of the line of the bed or bar upon which the before described fitting
slides.
As a matter of course any cam-motion, or even a simple cramp-screw may be
applied to supplant the lever for the purpose of thrust, the main feature of the
invention being, the instantaneous adjustment of the fitting, beforementioned, upon
the bed or bar which carries it.
Dated the out
1000
JAMES MCHARDY.
WILLIAM MCHARDY.
WALKER GEORGE DE FORGÉS GARLAND.
COMPLETE SPECIFICATION.
Improvements in Racket-presses, also Applicable for Analogous
Purposes.
We JAMES MCHARDY of Fairfax House Chiswick, Middlesex, Scientific
Expert, WILLIAM ROBERT MCHARDY of Fairfax House Chiswick, Middlesex,
Engineer and WALKER GEORGE De Forgés GarlAND of East Molesey Surrey
Manufacturer 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 which relates to improvements in racket presses also applicable
for analogous purposes consists mainly in providing a fitting, sliding upon a suitable
bed or bar in such a manner that when the strain is applied at the working point
the said fitting will hold its position on account of the skew friction arising from
the proportions of the parts.
This said moveable fitting may be worked with or without a spring, or any of
the parts may have sufficient elasticity to act, as a spring. At a point at a suitable

page_text: distance from the junction of the said fitting with the aforesaid bed or bar upon
which it slides, a lever inserted, which is in a manner hinged upon the said
fitting.
To this said lever, a wheel or roller is added, at any convenient point away from
the fulcrum. When this roller is used it forms practically the thrust for pressing.
The motion and direction of the said lever is regulated by the form of the joints of
the various accessory parts. The press may be of any form or in any direction.
In all cases the thrust is in the direction of the bed--(similar to a lathe bed)-or
bar upon which the fitting slides. Any cam-motion or even a simple cramp screw
may be substituted for the lever for the purpose of thrust, the main feature of the
invention being the instantaneous adjustment to suit one or any number of rackets
or a great or small bulk of material to be pressed.
In the accompanying drawings
Fig. I-Side elevation of a press, working upon a bar with one disc forming a
fixed point (in section) and several others besides the actuating one No. 7. The
apertures are suggestive of possible positions for tennis bats.
a-The said fitting sliding loosely upon (bb) a bar. The bar is square or
angular and is passed through a loose hole to suit it, in the said fitting a.
bb-The bar or bed upon which a slides. 1 is rigid with the bar but 2 3 4 5 6 7
are movable and slide to any desired position.
c-The working point at which the skew-friction arises when force is applied at
the upper end of the fitting a.
d-A lever with its fulcrum at
e-the hinged joint in a.
-A wheel or roller in the working end of the said lever.
g-The position in which d remains when pressure is established.
1-Section of a rigid disc or partition at the end.
2. 3. 4. 5. 6. 7-Movable discs (in section).
-A spring inserted in 7 to relieve the frame.
-A possible position (dotted lines) of the parts when actuated by the lever in
the position g.
Fig. II-An end elevation of the fitting on the bar (i.e. a upon bb Fig. I) and
the actuated disc (7 Fig. 1). N.B. all lettering not referred to is exactly in corre-
spondence with the lettering of Figure I.
Fig. III-A plan of a bed (such as a lathe bed) as an equivalent to 66 Fig. I.
If such a bed as this be used the fitting may slide upon it by having two holes for
purpose or it may be made as suggested in Fig.
the
Fig. IV-An end elevation of the fitting a adjusted to suit the bed. Fig. III.
6 6-The bed in section. N.B. the lower extremity of the fitting may if necessary
be attached so that by unscrewing the fitting may be released from the slot in
the bed.
Fig. V An equivalent construction without a spring in the disc.
a The same kind of fitting sliding upon
bb the bar or bed.
c-The working point as in Fig. I.
d-The lever hinged at k but rigid from d to y inasmuch as it is in one piece
from d to y.
ke-A connecting piece hinged into d at k and into a at e thus forming a knee-
joint lever.
y-The end of the lever or arm (without a roller) hinged permanently to
7-the actuating disc or partition (as in Fig. 1).
Fig. VI-Side elevation of the bed and fitting, a screw being substituted for the
lever or cam.
a-A fitting sliding upon
bb-the bed or bar.
c-The working point.
8. t. A screw to cramp up the disc or discs as suggested.

page_text: It is obvious that our invention may be applied to all analogous presses, i.e. such
presses as may be used for pressing materials of varying dimensions, as books
clothes &c. &c.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is,
1. The fitting herein described sliding freely on a bed or bar but held by the
skew friction arising from force applied at some distance from the sliding point, as
applied to racket presses.
2. The said fitting and bar or bed as applied to all such analogous purposes as
pressing materials of varying dimensions.
3. The said fitting and bed or bar in combination with any accessory parts such
as are herein set forth, for pressing purposes of an analogous character.
Dated this 22nd day of November 1892.
JAMES MCHARDY.
WILLIAM MCHARDY.
WALKER GEORGE DE FORGÉS GARLAND.