Improvements in Spring Draw Gear for Vehicles and in Axle Boxes or Bushings for the Wheels of the same.
Year: 1895

page_text: Date of Application, 25th Feb., 1895
Complete Specification Left, 25th Apr., 1895-Accepted, 22nd June, 1835
PROVISIONAL SPECIFICATION.
Improvements in Spring Draw Gear for Vehicles and in Axle Boxes
or Bushings for the Wheels of the same.
I TIMOTHY MURPHY of No. 74 O'Connell Street Clonmel in the County of
Tipperary Agricultural Engineer do hereby declare the nature of this invention to
be as follows:-
The
Said improvements consist in the mode by which said boxes are kept on the said
axles by means of collars or flanges. Said collars are made fast by means of
being screwed into the inside end of said boxes, or they may be screwed on to end
of boxes, or they may be fastened to boxes by means of set screws.
tightening against collars of axle of the leather washers or other packings which
are used in the said boxes in connection with the said collars of said axle is effected
by means of a washer which is placed between said flange aud said leather washers
of axle. Said leather washer is pressed forward against collar washer of said
axle by means of set screws which pass through said flanges.
Fig. 1 is a cross section of said box and axle. "A"is the box. At "E" is
shewn the said collar or flange which is screwed into box or it may be screwed or
otherwise fastened outside on box at "R." At "P" is shewn a metallic or other
washer which is placed inside said collar "E." Said washer "P" is pressed
against the leather washer "F" by means of any desired number of set screws.
Said set screws pass through said flange or collar "E" as shewn at "S." The
said washer "P" is tightened against the leather washer "F" from time to time
as said leather washers may wear through the friction while revolving against
collar of axle thereby preventing said box from jerking backwards or forward on
said axle until the leather washers are worn to nothing. Or said flange "E" may
be provided with a sufficient margin of screw to allow it to be screwed on after
the said washer "P" as said leather washer may wear. Or said washer "P may
be made up of a spiral spring in which case it may either partly or wholly press
said leather washer against collar of axle. Said flange "E" is prevented from
screwing off by means of a ratchet catch. Said catch is inserted in a slit in the
end of said flange "E" at "O" and is made to catch in either of the notches
formed all around in the end of box "A" shewn at "M" and is self acting. It
can be released out of the said notch formed in end of said box, with the hand
for the purpose of allowing said flange E to be screwed off.
"
Drawing Fig. 2 is an end view of said collar or flange "E" shewn in drawing
Fig. 1. A portion of said flange shewn at "d" is detachable and when said part
is so detached said collar or flange can be passed in upon the axle by way of said
space and the part shewn at "d" can then be replaced when said collar is
ready to be screwed into said box. Said washer "P" Fig. 1 is provided with a
projection stop shewn at "N" Fig. 3. and said projection "N" is made to fit into
a groove. Said groove is formed in that part of box in which said washer "P
is placed. Said projection formed at "N" is free to move in and out in said
groove. Said groove is intended to cause said washer "P" to revolve around with
said box of axle. The said collar or flange "E" shewn in drawing Fig. 2. may
be kept in position in said box by means of two pius shewn by the dotted lines in
said drawing. Said pins pass through the said box as well as through the said
collar. The said pins are shown in the cross section of said box in drawing Fig. 1.

page_text: at "V." Said pins may be either screwed in the hole or be kept in by means of a
key or pin passing through the end of same outside said box. The set screw
shewn at "S" Fig. 1. is provided with a spiral spring. Said spring is placed
between the head of said pin and the said flange and is intended to prevent said
set screw "S" from screwing back by reason of the end of the coil of spiral
spring at each end catching in notches formed in the inner face of head of said
set screws and similar notches formed in the part of said flange "E" against
which said spiral springs press. In drawing Fig. 4 is shewn the spring draw gear
or spring draft and trace equalizer. The two rods or chains "00" are attached
U U "
to the axle or other convenient place and the other two ends shewn at "
are the points to which the traces are attached for drafting, or said draft may be
taken from the bar shewn at "I."
The bar shewn at "I" is attached at the points "UU," the spiral spring shewn
at "B" is attached at "t" to said chains and when the force of the draft is put
on at "UU" the spiral spring attached at "tt" will be extended by reason of
said chains being drawn towards a straight line which increases the distance
between "OO" and "UU" thereby establishing an indirect spring draft. The
two points of chains shewn at "UU" are suspended by stops or rods from the
splinter bar or body. Another of the modes by which said draft may be applied
is shewn in drawing Fig. 4 in which case said spiral spring "B" is attached to the
chain "d" at "K" the other end of said spring is attached to the axle at "Y.”
Said chain "d" is attached to the two rods "OO" and "U U."
Dated this 22nd day of February 1895.
TIMOTHY MURPHY.
Improvements in Spring Draw Gear for Vehicles and in Axle Boxes
or Bushings for the Wheels of the same.
I, TIMOTHY MURPHY of No. 74 O'Connell Street Clonmel in the County of
Tipperary Agricultural Engineer 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 :-
Said improvements consist in the mode by which said boxes are kept on the said
axles by means of collars or flanges. Said collars are made fast by means of being
screwed into the inside end of said boxes, or they may be screwed on to end of
boxes or they may be fastened to boxes by means of set screws.
The tightening
against collars of axle of the leather washers or other packing which are used in
the said boxes in connection with the said collars of said axle is effected by means
of a washer which is placed between said flange and said leather washers of axle.
Said leather washer is pressed forward against collar washer of said axle by means
of set screws which pass through said flanges. I adopt drawings left with
Provisional Specification in reference to Figs. 1. 2. 3. and 4. referred to herein.
Fig. 1. is a cross section of said box and axle, "A" is the box, at "E" is shewn
the said collar or flange which is screwed into box or it may be screwed or
otherwise fastened outside on box at "R." At "P" is shewu a metallic or other
washer which is placed inside said collar "E."
Said washer "p" is pressed against the leather washer "F" by means of any
desired number of set screws. Said set screws pass through said flange or
collar "E" as shewn at "S." The said washer "P" is tightened against the
leather washer "F" from time to time as said leather washer may wear through
the friction while revolving against collar of axle thereby preventing said box
from jerking backwards or forward on said axle until the leather washers are
worn to nothing. Or said flange "E" may be provided with a sufficient margin of

page_text: screw to allow it to be screwed on after the said washer "P" as said leather wasner
may wear. Or said washer "P" may be made up of a spiral spring in which
case it may be either partly or wholly press said leather washer against collar of
axle. Said flange
"E" is prevented from screwing off by means of a ratchet
catch. Said catch is inserted in a slit in the end of said flange "E" at "O" and
is made to catch in either of the notches formed all around in the end of box "A"
shewn at "M" and is self acting. It can be released out of the said notch formed
in end of said box with the hand for the purpose of allowing said flange "E" to
be screwed off.
Drawing Fig. 2 is an end view of said collar or flange "E" shewn in drawing
Fig. 1.
66
A portion of said flange shewn at "d" is detachable and when said part is so
detached said collar or Hange can he pressed in upon the axle by way of said space
and the part shewn at " d" can then be replaced when said collar is ready to be
screwed into said box. Said washer "P" Fig. 1. is provided with a projection
stop shewn at " N" Fig. 3. and said projection Nis made to fit into a groove.
Said groove is formed in that part of box in which said washer "P" is placed.
Said projection formed at "N" is free to move in and out in said groove. Said
groove is intended to cause said washer "P" to revolve around with said box of
axle. The said collar or flange "E" shewn in drawing Fig. 2. may be kept in
position in said box by means of two pins shewn by the dotted lines in said
drawing. Said pius pass through the said box as well as through the said collar.
The said pins are shewn in the cross section of said box in drawing Fig. 1
at "V." Said pins may be either screwed in the hole or he kept in by means of
a key or pin passing through the end of same outside said box. The set
screw shewn at "S Fig. 1 is provided with a spiral spring. Said spring is
placed between the head of said pin and the said flange and is intended to prevent
said set screw "S" from screwing back by reason of the end of the coil of spiral
spring at each end catching in notches formed in the inner face of head of said
set screws and similar notches formed in the part of said flange "E" against
which said spiral springs press.
at "
In drawing Fig. 4 is shewn the spring draw gear, the two rods or chains "O O'
are attached to the axle or other convenient place and the other two ends as
shewn at " UU" are the points to which the traces are attached for drafting, or
said draft may be taken from the bar shewn at "1." The bar shewn at "I" is
attached at the points "U U," the spiral spring shewn at "B" is attached at "t"
to said chains and when the force of the draft is put on at "UU" the spiral
spring attached at "t" will be extended by reason of said chains being drawn
towards a straight line which increases the distance between "OO" and "UU"
thereby establishing an indirect spring draft. The two points of cbains shewn
UU" are suspended by stops or rods from the splinter har or body.
Another of the modes by which said draft may he applied is shewn in drawing
Fig. 4 in which case the said spiral spring "B is attached to the chain "d"
at "K," the other end of said spring is attached to the axle at "Y." Said
chain "" is attached to the two rods "OO" and "U U." Or the said drafting
chains may be kept close together at both their ends and extended towards the
centre in which case there are two spiral or other springs used one end of each
spring to be attached to said chains at about the same point as spring shewn
at "t" Fig. 4 and the other ends of said two spiral springs are attached to the
body or other convenient part, or a spiral spring may be placed between said
chains at the point where they are extended for the purpose of resisting the inner
pressure of said chains caused by drafting.
In supplementary drawings Fig. 5 and 6 is shewn the mode by which the said
collar or flange is screwed on to the outside diameter of said box as stated in
drawing Fig. 1, and the mode of keeping same fast by the spring stop.
a u
"
At " Fig. 6 are two segments which form a ring as shewn at a a" Fig. 5.
Said segments are placed within the circumference of said flange "d" and when said

page_text: "
a a
flange is screwed on the box the said segments or ring
"will be tightened
between the inside of end of said flange "d" shewn at "G" and the end of said
box "F." Said flange "d" is placed in position on said axle by being passed in
over the collar of same. The two segments 6i
aa" are then placed in position
within the said flange inside the collar of said axle and said flange is then screwed
on the said box "F." At "M" Fig. 5 is shewn the said spring stop. Said stop
passes through the said Hauge, "d" and also through the said box shewn
at M" Fig. 6. Said stop is intended to keep a tightening pressure on the
screw of said flange "d" by means of the spring shewn at "H" being made
to act on an arm which forms part of said stop. Said spring is made to force
the said arm outwards thereby forcing said stop forward and causing the
part of it that is inserted in the box to be pressed forward thereby forcing
the flange
in a contrary direction and thus effecting a constant tightening
pressure of the screw of said flange. Said spring "H" and stop "M"are held in
position by pins shewn at "M" and "NN" Fig. 5. Said pins pass through
projections formed on the said flange "d."
66
d
"
In drawing Fig. 7 is shewn a disc which is made in two segments and is intended
to be inserted within the circumference of said ring aa" Fig. 6 shewn by the
dotted lines at "S." Said disc is intended to press the leather washer as required
against the collar of axle by means of the pins "P."
66
Said pins which pass through the said ring a a "and also through the end of
said flange "d" and are pressed forward against the said disc which is shewn
by the dotted lines at "S" by a second flange "7" which is screwed on to the
Hange "d."
Leather or other packing is placed at both sides of collar of said axle shewu
at "OO" Fig. 6. Said second flange shewn at "" is kept from screwing back
by a catch as hereinbefore stated and illustrated in drawing Fig. 1.
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 :-
1. The means of keeping boxes or bushings of wheels on the axles of vehicles
by means of a fastening applied at the back or inside end of box, said fastening
consists of a flange or collar which is screwed or otherwise fastened either inside
or outside on end of said box in substance as stated in drawings Figs. 1, and 6.
2. Having a part of said Hange moveable to admit of flange being placed on
said axle inside said collar before it is screwed into said box in substance as stated
in drawings Figs. 1 and 2.
66
3. The passing of said flange in over the said collar of axle, and having the
ring
aa Fig. 6 made in two segments to admit its being placed on the said
axle inside said collar within the circumference of said flange "d" Fig. 6 before
said Hange is screwed on to the box in substance as stated in drawings Fig. 5
and 6.
4. The forming of a disc in two segments shewn in Fig. 7 and the placing of the
said disc on said axle behind said collar of axle within the flange "d" shewn at "S"
and the tightening of said dise against the said packing as required in case of
wear by means of the pins and the pressing of said pins forward against said disc
by the second fange "7" which is crewed on to the flange "d" in substance as
stated in drawing Fig. 6.
5. The tightening of said disc against said packing by means of set screws in
substance as stated in drawing Fig. 1.
6. The attaching of two chains and said chains may be composed of any suitable
material, one end of each chain is attached to any convenient place at or near the
axle, the other two ends are attached to a bar and they may be drafted direct from
the ends, or the draft may be taken from the said bar in substance as stated in
drawing Fig. 4. The spring draft is effected by drawing said chains closer
towards each other at any desired part along their length as shewn at "t t" Fig. 4.

page_text: 7. The attaching of a spiral or other spring or springs at each end to said
chains shewn at "it" Fig. 4.
8. The pressure exerted on said chains at point of draft causing each of them to
be forced towards a straight line along their whole length and as the spring
at "t" will to some extent resist the straightening strain on said chains an
indirect spring draft is the result in substance as stated in drawing Fig. 4.
Dated this 23rd day of April 1895.
TIMOTHY MURPHY.