Apparatus for Throwing Hoops or Rings.
Year: 1891

page_text: Date of Application, 19th Oct., 1891
Complete Specification Left, 19th July, 1892-Accepted, 19th Oct., 1892
PROVISIONAL SPECIFICATION.
Apparatus for Throwing Hoops or Rings.
I, LEO FUCHS, Mechanician, of. Möckern, near Leipzig, Saxony, do hereby
declare the nature of this invention to be as follows:-
This invention relates to apparatus for mechanically throwing or shooting hoops
or rings in such a manner, that the hoop or ring will not only move forward, but at
the same time also turn on its axis.
The apparatus is constructed somewhat like a bow for shooting arrows, that
is to say, it comprises chiefly a shaft or stock, an elastic segment or arched
spring and a string. The shaft has in its upper surface a longitudinal groove
for guiding a sliding block or carriage which propels the hoop under the pressure
of the string. The said block has at its rear end a recess into which enters the
string of the bow, while the right and left sides are provided with guide pins,
which project into corresponding slots formed in the vertical faces of the said
longitudinal groove. On the top of the said sliding block is mounted a friction
roller adapted to turn on a vertical pivot and which presses against the inside of
the ring to be thrown. The lateral guide slots mentioned above, are not straight
throughout, but have at the front a short downward incline, in consequence of
which the sliding block recedes downward out of the way of the hoop, before the
latter leaves the bow.
The hoop or ring is placed horizontally on the surface of the shaft, and so that
the friction roller touches the inside of the ring and propels the latter forward,
when the string is released.
For imparting to the ring at the same time a rotary motion, a longitudinal guide
rail is fixed on one side of the shaft. The vertical inner face of the said rail
is not parallel to the groove or axis of the stock, but slightly oblique, and at
such a distance from the axis, that the outer circumference of the hoop will roll
upon the rail when the hoop runs forward. The rolling motion thus imparted to
the hoop will continue after it has left the apparatus.
Dated this 10th day of Ontahan 1901
FAIRFAX & WETTER,
433, Strand, London, Agents for the Applicant.
.COMPLETE SPECIFICATION.
Apparatus for Throwing Hoops or Rings.
I, LEO FUCHS of Mockern, Leipzig in the Empire of Germany, Merchant 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:
The following invention relates to a cross bow the construction of which is
represented in the accompanying drawing, viz. :-
Figure 1 is a side elevation of my apparatus-partly in section.
Figure 2 is a plan.
Figure 3 represents-in plan and sectional edge view-a hoop or ring to be
thrown.
Figure 4 represents (1) a plan (2) sectional side elevation and (3) end view
respectively of the travelling slide or sledge E.
Upon the stock A the plates B serving for the reception of the projectile are
fastened by two cross bars a¹ and a' the plates B being arranged as shown in
Price 8d.

page_text: Figure 2 to form a slot in which the sledge or slide E is guided and travels to
and fro.
The sledge E (Figure 4) carries crossways thereon two strips k extending out-
wards for the purpose of holding it between the plates B and stock A.
A steel bow C is bedded in the front of the stock A to the ends of which a strong
piece of india rubber is fastened (see Fig. 2) this rubber band D being pushed
through two bows g g fastened at the back of the sledge E so as thus to connect D
to the back of E.
In Figure 1 F denotes the trigger the rectangular bent tongue at the top of
which controls the locking apparatus G which is pivotted at c and normally kept
pressed upwards by the spring so that immediately the sledge E passes the
catch the latter snaps into the slot O (Fig. 4) underneath the sledge E.
The sledge carries upon its top side the projection or little roller i (fastened by a
screw) through which the potential energy stored in the drawn bow D is given to
the projectile at the moment of discharge.
When the trigger is drawn and releases the slide E the latter flies forward and
sinks down into a recess arranged for this purpose in the stock A (near the front
thereof) and provided with an india rubber buffer Q to save the sledge E from
shocks.
The sledge E having on its stock the ring K to be shot the latter is not now held
any more by the small cylindrical roller pin or catch i and therefore enters into its
trajectory way.
Figures 1 and 2 show a wedge-shaped arm H (with two sighting points n¹ and n³
thereon) fastened to the plate B.
Figure 3 shows a hoop or ring K adapted for being thrown by my apparatus.
Through the arm H the projectile on its way from the starting point is pressed
towards the right out of the centre line of the plate B and a rotatory motion is thus
imparted to the ring or projectile K.
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 :-
:-
A crossbow having a sledge E sliding along between two ledges B and the
stock A and sinking down at the end of its way into a recess provided with the
buffer Q to reduce the shock to the said sledge E and an arm H in the form of a
wedge fastened to the left hand ledge B in order to give the projectile K a rotatory
motion on its propulsion and thereby a better cleavage of the atmosphere in its line
of flight substantially as and for the purposes hereiubefore set forth.
Dated this 19th day of July 1892.
TONGUE & BIRKBECK,
34, Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.