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G. BRISSON.
SLEIGH BRAKE.
APPLIOATION FILED AUG. 22 1911
. Patented Mar. .
i '
Im
Witnesses
George zzrd'anr
by
Inventor
UNITED STATES PATENT OFFICE.
GEORGE FRISSON OF NORWAY MICHIGAN.
SLEIGHBRAKE.
. Specification of Letters Patent. Patented Mar. 12 1912. Application filed August 22 1911. Serial No. .
To all whom it may concern:
Be it known that I GEORGE BRISSON a
citizen of the United States residing at Norway in the county of Dickinson and
5 State of Michigan have invented a new and useful SleighBrake of which the following is a specification.
This invention relates to brakes and has for its object to provide a simple serviceable
10 and convenient brake for use in connection with sleighs sleds or the like.
Another object of the invention is to provide a brake of this character which can be conveniently brought into operation and
15 when released assumes a normal inoperative position.
With the above and other objects in view this invention is embodied in the novel arrangement combination and construction of
20 parts as hereinafter described and as pointed out in the appended claim the invention being illustrated in the accompanying drawings in which similar reference characters indicate similar parts and in which
25 Figure 1 is a plan view. of a bob sled embodying the present invention. Fig. 2 is a side elevation thereof. Fig. 3 is a section on the line 3—3 of Fig. 1 the relative parts being shown in operative position.
30 Referring specifically to the drawings the runners of the bob sled are designated at 5—5 which are connected at an intermediate portion by the usual cross beam 6 and the front ends of which are connected by a
35 cross bolt or rod 12. On the front side of the beam 6 is mounted a rock shaft 16 the same being preferably mounted through the eyebolts 7 secured to the said beam and the outer end of the said rock shaft has secured
40 thereto a suitable operating lever 17. A pair of arms are secured to the rock shaft 16 and normally extend forwardly therefrom the outer or free ends thereof converging slightly together and being connected near
45 the outer extremities by a cross rod 9. On
each end of the rod 12 within the runners 5
is pivotally mounted a lever 13 which are
spaced apart by a sleeve or tubular member
11 on the said bolts. The levers 13 are
formed of angle irons the respective flanges
thereof projecting upwardly and inwardly
and the said levers converge toward their
rear ends. A pair of coiled springs 15 are
secured to the inner or free ends of the said
levers and to the front side of the beam 6 the said contractile springs tending to raise
the rear or inner ends of the said levers. Across the bottom flanges of the said levers and at the rear ends of the same are secured the dogs 14 which are preferably of angle 80 iron with one flange thereof secured to the inner flanges of the said levers and the other flange depending from the said levers. A contractile coiled spring 10 is secured at one end to the cross rod 9 connecting the outer 65 ends of the arms 8 and at the other end to the intermediate portion of the sleeve or tubular member 11 thus tending to pull the cross rod 9 forwardly. The upstanding flanges of the levers 13 are provided with 70 elongated slots 18 at the rear ends thereof through which slots the cross rod 9 passes the arms 8 being disposed outside of the levers 13.
In use the lever 17 or rather the rock 75 shaft 16 is adapted to be operated from any part of the sled by any suitable means or mechanism (not shown) to swing the arms 8 downward in which event the cross rod 9 rides rearwardly in the slots 18 and depresses 80 the rear ends of the levers 13 to bring the clogs 14 in contact with the surface over which the sled is being drawn. This contact or engagement of the clogs 14 with the surface over which the sled is being drawn it 85 will be understood retards or arrests the motion of the sled and upon the rock shaft 16 being released the spring 10 pulling the cross rod 9 forward and the springs 15 pulling the rear ends of the levers 13 upwardly 90 returns the relative parts to normal inoperative position. The spring 10 is provided for the purpose of preventing the arms 8 and cross rod 9 from being locked at or past the "dead center" as will be understood. It 95 will therefore be seen that the rock shaft 16 in being operated causes the relative parts to come into an operative position and upon the same being released the relative parts assume a normal inoperative position. It is  understood however that this mechanism is not only applicable to bob sleds but that the same can be applied to various forms of sleighs and sleds and it is further understood that this invention is susceptible of  alterations in its details of construction and formed within the scope of the appended claim without departing from the spirit of the invention.
What is claimed is: The combination with a pair of runners and a cross beam of a rock shaft mounted
50
55
on the said cross beam a cross rod connect
ing the front ends of the said runners a pair
of levers pivoted on the said cross rod and
extending rearwardly and having slots in
5 their rear ends a dog secured to the inner
ends of the said levers a contractile spring
secured at one end to the cross beam and at
the other end to the rear end of one of the
said levers a pair of arms secured to the
to said rock shaft a cross rod secured to the
outer ends of the said arms and passing
through the slots in the said levers and a contractile spring connecting the latter cross rod with the former cross rod.
In testimony that I claim the foregoing as my own I have hereto affixed my signature in the presence of two witnesses.
GEORGE BRISSON. Witnesses :
JAMES C. KNIGHT JACOB E. SODERBERG.
15
Copies of this patent may be obtained for five cents each by addressing the "Commissioner of Patents.
Washington D. C."