Improvements in Brake Apparatus for Fly-wheels and the like.
Year: 1894

page_text: Date of Application, 20th June, 1894
Complete Specification Left, 19th Mar., 1895-Accepted, 1st June, 1895
PROVISIONAL SPECIFICATION.
Improvements in Brake Apparatus for Fly-wheels and the like.
I, LOUIS JACOB, of 22 neue Leipziger Strasse, Cassel, in the Empire of
Germany, Mechanician, do hereby declare the nature of this invention to be as
follows:-
This invention relates to brake apparatus for fly-wheels and the like.
The apparatus constructed according to the said invention comprises an electrical
disengaging device and has two brake shoes with supporting devices arranged
outside the engine or machine so that the strains produced during the application of
the brake will be taken up by the foundation.
Owing to the action of the electrical disengaging device the long arm of a bell-
erank lever provided with a toothed sector is allowed to fall when the fly-wheel
turns and is seized and pulled by a toothed crown, thereby applying the brake shoes
firmly to the fly-wheel and stopping the same.
The toothed crown is adapted to turn upon a central cap and may be hindered in
its turning movement by a cover tightened against the crown with screws so that
the pull at the long arm of the bell-crank lever will take place with a power which
can be regulated by tightening or loosening these screws. The power thus pulling
the long lever arm augmented by the leverage is transmitted through draw rods to
the brake shoes, the arrangement being such that the same power which acts
upon the brake shoe on one side of the fly wheel will also be brought to bear upon
the brake shoe on the other side of this wheel, thus avoiding a deleterious action
upon the shaft of the same.
A wedge receiving the pressure of the before-mentioned toothed sector may be
pulled back by a screw the nut of which moves to the end of a slot in the toothed
sector and pulls the latter from the toothed crown.
By a hand lever the long arm of the bell-crank lever is again raised, the
disengaging device stops the hook of a suspension rod upon a pin, and the said nut
is again moved forward.
Dal his 30th day of Lune 1901
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
Improvements in Brake Apparatus for Fly-wheels and the like.
I, LOUIS JACOB, of 22 nene Leipziger Strasse, Cassel, in the Empire of
Germany, Mechanician, 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 brake apparatus for fly-wheels and the like.
My said invention is illustrated in the accompanying drawing in which
Figure is an end view of a fly wheel provided with my improved brake-
apparatus.

page_text: Figure 3 is an end view taken from the opposite side of the wheel from that of
Figure 1.
Figure 4 shows a detail and
Figure 5 is a sectional plan of Figure 2.
Similar letters of reference indicate corresponding parts in the several figures of
the drawing.
The apparatus constructed according to the said invention comprises an electrical
disengaging device and has two brake shoes A and A' with supporting devices B
and B arranged outside the engine or machine so that the strains produced during
the application of the brake will be taken up by the foundation.
Owing to the action of the electrical disengaging device C the long arm D of t
hell-crank lever provided with a toothed sector E is allowed to fall so that when
the fly-wheel R turns in the direction of the arrow the said sector is seized and
pulled by a toothed crown, F thereby applying the brake shoes A and A', as showy
in Figure 5, firmly to the fly-wheel and stopping the same.
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The toothed crown F, Figures 2, 4 and 5, is adapted to turn upon a central
G Figures 2 and 5 but may be retarded in its movement by the cover H
Figure 5 not shown in Figure 2 which cover is tightened against the crown by
means of screws I so that the pull at the long arm D of the bell-crank lever will
take place with a power which can be regulated by tightening or loosening these
Screws. The power thus acting on the long lever arm D, augmented by the
leverage due to the length of the two lever arms a b and c d. is transmitted through
draw rods and to the brake shoes, the arrangement being such that the same
power which nets upon the brake shoe A on one side of the fly wheel will also be
brought to bear upon the brake shoe A on the other side of this wheel, thus
avoiding a deleterious action upon the shaft of the same.
In order that the brake apparatus, after it has produced its effect, may be put in
readiness again provide a screw N preferably furnished with a crank. It does
not however act upon the toothed sector E but upon the rear part of the pressing
piece P which is guided in the latter. This construction has for its ubject to relieve
the arms of the toothed sector and the guide of the latter during the application of
the brake. By turning the serew N to the right, the pressing piece P is first drawn
back, and when this has arrived at the end of the slot. O in the toothed sector the
latter is also carried away and brought out of engagement.
With the aid of the
hand lever S the lever D is then moved upwards again and the disengaging device
thrown into gear. Lastly the screw N is turned back again. During its movement
it first moves the pressing piece P again, and this carries away the toothed sector.
A one-sided jamming of the latter is prevented by the toothed sector moving very
easily in its guide and the rear part of the pressing piece being guided in the
rear part of the toothed sector, so that there will be no counter-pressure, and lastly
because the component of the pressing force exerted by the screw N, which
component is produced by contact of the pressing surfaces and tends to cause
jamming, is balanced by the weight of the toothed sector.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what
1 claim is
Ally-wheel brake with an electric disengaging device, in which the drop lever
applying the brake shoes and provided at one of its ends with a toothed sector is
neted upon by a toothed wheel which is operated by the fly wheel by variable
friction turning the toothed sector, which latter, after the brake has been applied,
is disengaged by means of a screw and by pulling the lever.
Dated this 19th day of March 1805.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.