Year: 1886

page_text: I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake, & Co, Patent Agents
Southampton Buildings in the County of Middlesex 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 chiefly to that class of pinch-bars which are employed for
moving railway vehicles, and has for its object to increase the efficiency of such
bars and to render the same more convenient in their operation, so that a greater
pressure can be exerted upon the wheels of the vehicles and the latter moved with,
greater ease than heretofore, without increasing the pressure which is applied to
the bar.
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The said invention consists in the improvements in the construction of the bar
hereinafter set forth.
In the accompanying drawing.
Figure 1 is a side elevation of my improved pinch-bar applied to a wheel.
Figure 2 is a sectional elevation of the lower end of the pinch-bar.
Figure 3 is a side elevation of the same.
Figure 4 is a top view or plan thereof.
Like letters of reference indicate like parts in the several figures.
A represents the body or handle portion of the pinch bar, composed of a long
arm or hand lever a and a short lifting arm or nose a¹, which latter is adapted to
bear with its sharp or edged end against the face of the wheel. The end of the
nose a is provided with a wear plate b of hardened cast steel, or other suitable
material. This plate is secured to the arm a by a screw bolt, or otherwise, so that
it can be readily detached and replaced by a new one, when worn out.
C represents the fulcrum portion of the pinch-bar, pivotted with its rear end to
the handle portion A by a horizontal bolt d, which passes through the handle
portion A above the nose a¹. The fulcrum portion is bifurcated, and straddles the
lower end of the portion A and the nose a¹. e represents the fulcrum formed on
the lower side of the pivotted portion C, so as to rest on the tread of the rail. This
LDC17

page_text: fulcrum is preferably formed by an angular bar of steel which is inserted in a·
socket formed transversely in the underside of the pivotted portion C. f represents
a lifting or working nose formed at the end of the fulcrum portion C, and provided
with a removable steel plate g similar to the plate b of the nose a¹. hh represent
lugs or cars formed on both sides of the handle portion A below the pivot bolt d,
and adapted to bear against the underside of the rearwardly extending arms i of
the fulcrum portion C, when the nose a¹ has been raised sufficiently above the
arms i¹.
My improved pinch-bar is used like an ordinary pinch-bar, by placing the
fulcrum e on the head of the rail and pushing the working nose f against the face
of the wheel. In this position of the bar the handle portion A and the pivotted
fulcrum portion C are in line with each other or nearly so, and the nose a' of the
handle portion lies between the arms i of the fulcrum portion, as represented in
Figures 2 and 3. Upon depressing the portion A. the nose f is raised and brought
in contact with the periphery of the wheel, and the handle portion next turns on
the bolt & until the nose a bears against the face of the wheel. The pinch bar
now operates upon the face of the wheel at two points by means of the noses a¹
and f. The action of the lower nose f is principally that of lifting and the action
of the upper nose a¹ that of turning the wheel; thus, by the joint action of both,
the wheel is moved with great facility and with greater speed and a much smaller
application of power than with ordinary pinch-bars. The lugs or ears h form
guards which prevent the fulcrum portion from swinging back too far, when the
bar is raised, and which prevent the handle portion from going down too far in
depressing the bar.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated
to me by my foreign correspondent, I declare that what I claim is:
First. The combination with the handle portion A, of a fulcrum portion C,
pivotted at its rear end to the handle portion and provided at its underside with a
fulcrum adapted to rest on the rail, substantially as set forth.
Second. The combination with the handle portion A provided with a working
nose a¹, of a fulcrum portion C pivotted to the handle portion and provided with
a working nosef, both noses being adapted to bear against the wheel simultaneously,
substantially as set forth.
Third. The combination with the handle portion A provided with a working
nose a¹, of the fulcrum portion C provided with a working nose f and rearwardly
extending arms i straddling the nose a¹ and pivotted to the handle portion above
said nose, substantially as set forth.
Fourth. The combination with the handle portion A provided with a working
nose a¹ and lugs or ears h, of the fulcrum portion C pivotted to the handle portion A
and adapted to be supported by said ears; substantially as set forth..
Fifth. The combination with the handle portion A baving a working nose a
provided with a removable wear plate b of a fulcrum portion C pivotted to the
handle portion A and having a working nose f provided with a removable wear
plate g, substantially as set forth.