IMPROVEMENTS IN CARRIAGE-JACKS
Year: 1885

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I WILLIAM ROBERT LAKE, of the firm of Haseltine, Lake, and Co, Patent
Agents, Southampton Buildings, in the County of Middlesex do hereby declare the
nature of my invention for "IMPROVEMENTS IN CARRIAGE-JACKS 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 more especially to carriage-jacks which are provided with
levers, and are designed for use in lifting the axle of a carriage to raise a wheel
from the ground for greasing or repair; and it consists in a novel construction and
arrangement of the parts, as hereinafter fully set forth by which a simpler, cheaper,
and more effective device of this character is produced than is now in general use.
The nature and operation of the improvement will be readily understood from
the following explanation, its extreme simplicity rendering an elaborate.description
unnecessary.
In the accompanying drawing
Figure 1 is a perspective view of the improved carriage-jack.
Figure 2 is a vertical longitudinal section of the same; and
Figure 3 is a side elevation showing the socket with portions of the pitman rod
and lever.
Like letters and figures of reference indicate corresponding parts in the several
figures of the drawing.
A represents the base; B, B the standards or uprights; C the lever; D the
retaining-bar, and Ẹ the lifting bar or slide.
The standards have their lower ends framed into the base, and are arranged in
such a manner as to leave a space between them sufficiently wide to receive the
lever C and bars E, D.¨
The bar E is provided with an elongated slot and a series of notches mi, and is
fitted to work vertically between the standards in the head of the jack on the
pins f, f, which pass laterally through said slot and are supported in the standards.

page_text: The lever C is pivotted at g in the body of the jack, and jointed to its short arm
at h is a vertically-arranged pitman or rod G, which passes through a slot i in the
bar E, and has its upper end jointed to said last named bar at t.
The retaining-bar D is provided on its under side, at its inner end, with a series
of serrations or teeth 1, adapted to engage a pin or stop n disposed in the
standards B, its outer end being pivotted at in the outer end of the lever C.
A cross-beam H is secured between the standards to hold them properly apart,
the beam being connected with the base A by an inclined brace L, for steadying
the standards and preventing them from working loose in the base.
When the jack is made of large size, or for doing heavy work, I employ the
iron head-piece K, in which the lever C is inserted and secured by screws t¹, said
head-piece being provided with a hole y for receiving the pivot rod g, and having
the pitman G pivotted at h in its outer end, as shown in Figure 3.
The side or edge of the bar E, between the notches N, is covered with thick
bosses of india-rubber N, to prevent the bar from injuring the carriage-axle or
other article being lifted.
In the use of my improvement the top of the bar E, or one of the notches m, is
placed under the axle of the carriage, and the outer end of the lever O depressed
until the wheel is raised the desired distance from the ground.
The teeth are so formed as to incline toward the outer end of the lever, and
when the lever is forced down to raise the superincumbent weight on the bar E,
the teeth slide over the pin n, and when the lever is released the teeth engage the
pin and lock the lever, thereby preventing the bar E from descending, and holding
the wheel in an elevated position in a manner which will be readily obvious
without a more explicit description. After the wheel has been greased, or
whenever it is desired to lower the axle, the lever C and bar D are grasped in the
hand and forced downwardly a slight distance, thereby relieving the strain on the
bar D, after which the hand is closed (thereby disconnecting the serrated end of
the bar D from the pin n), and the lever raised, permitting the bar E to descend
and the wheel to fall to the ground.
It will be obvious that the lever C and bar D serve as a handle by which the
jack may be readily lifted and placed in position for use, and also that but one
hand is required to raise the wheel and lock the jack, or to unlock the jack and
lower the wheel, a very important feature in devices of this character, as one hand
is usually occupied in holding the wrench or oil-can.
It will also be obvious that instead of the standards and base of the jack being
framed together as described, these parts may be made of metal and cast integral,
if desired, it being understood that proper materials are to be used in the
construction of all its parts, and that they are to be made in a substantial and
workman-like manner.
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
I claim is
First. The improved carriage-jack herein described, the same consisting of the
base A, standards B, B, sliding bar E, pitman G, lever C, serrated retaining-bar D,
stop-pin n, pivots t, h, r, and guide-pins f, f, constructed, combined and arranged
to operate substantially as set forth.
Second. In a carriage-jack, substantially such as described, the serrated bar D.
pivotted at its outer end to the outer end of the lever C, said bar being arranged
beneath said lever, in combination with the pin n, substantially as specified.
Third. In a carriage-jack, substantially such as described, in combination with
the lever, a retaining bar or device for locking said lever when it is depressed, said
bar or device and lever being adapted to be grasped at the same time and operated
by one hand to unlock the lever and permit it to rise and the wheel to fall,
substantially as set forth.

page_text: Fourth. In a carriage-jack, substantially such as described, the notched bar E
provided with the india-rubber bosses N, substantially as, and for the purpose, set
forth.
Fifth. In a carriage-jack, substantially such as described, the head-piece K, in
combination with the lever C and pitman G, substantially as described.
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1007
HASELTINE, LAKE & Co.,
For the Applicant.