Improvements in Dust Guards for Axle Boxes.
Year: 1891

page_text: Date of Application, 21st July, 1891-Accepted, 5th Sept.,
1891
COMPLETE SPECIFICATION.
Improvements in Dust Guards for Axle Boxes.
I, ABE LINCON CUSHMAN of Concord, County of Merrimac, and State of New
Hampshire, United States of America, 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 improved dust-guard for car-axle boxes of this invention, in substance, is
composed of blocks, preferably made of wood, having through each a corresponding
hole of a diameter to receive and fit the car-axle and in the contiguous faces of both
opposed recesses or cavities in combination with springs contained in said opposed
recesses of said blocks, substantially as hereinafter described.
In the drawings, forming part of this Specification,
Figure 1 is an isometrical perspective view of a dust-guard of this invention.
Figure 2 is a transverse vertical section, line i-i, Figure 1.
Figure 3 is a face view of the block detached.
In the drawings, A, B, are two similar blocks, preferably of wood of any suitable
kind. These blocks are placed side against side and each has a hole through it
both of corresponding diameter and a diameter suitable to receive and fit the car-
axle, with which the blocks are to be used.
cc are recesses or cavities at one and the same end-portion and at the contiguous
sides of each block A, B.
Each recess is vertical, and horizontally each is semicylindrical. There are two
recesses for each block one on each side of the vertical plane of the axle and below
the axle-holes of the blocks, and all the recesses are axially parallel with each other
and the vertical axial-plane of the blocks and those on the same side of said axial-
plano are in a corresponding vertical plane and with the axle-holes of the blocks
registered, their upper and lower ends lap by each other and correspondingly as to
both sets. dd are spiral springs one placed in each set of the opposed cavities of
the blocks, and end to end held between the upper end of one and the lower end
of the other cavity. The opposed vertical edges of each block have a vertical
groove to receive the opposite edge-portions of strips a of sheet metal, each suitably
shaped therefor and along the edge-portion of one block secured to it by pins e and
along the edge-portion in the other block free to move in the groove thereof.
The blocks A, B, constructed and disposed and connected together and in com-
bination with the springs all as explained, are free to move upon each other,
whereby placed on a car-axle and suitably held in the axle-box obviously by the
action of their springs they automatically adjust themselves to the axle, compensating
for the wear of each other and so secure at all times close contact with the axle and
prevent the entrance of dust into the box, the advantages of which are manifest
without particular mention.
The metal strips a hold the blocks together and allow them to move freely upon
each other, against and with the pressure or tension of the springs.
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. A dust-guard for car-axles and their boxes, constructed of blocks A, B,
placed side by side and having registering axle receiving holes, in combination with
a spring or springs confined end to end on and extending across from one to the
other of said blocks, substantially as described, and for the purposes specified.
Second. A dust-guard for car-axles and their boxes, constructed of blocks A, B,
placed side by side and having registering axle receiving holes, and cavities in their

page_text: contiguous faces, in combination with springs confined end to end in said cavities
and extending across from one to the other of said blocks, substantially as described,
and for the purposes specified.
Third. A dust-guard for car-axles and their boxes, constructed of blocks A, B,
placed side by side and having registering axle receiving holes, in combination with
a spring or springs confined end to end on and extending across from one to the other
of said blocks, and strips held on one and loosely interlocked with the other of the
blocks, substantially as described, for the purposes specified.
Dated this 21st day of July 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.