Improvements in Steering or Guiding and Locking Devices for Vehicles and Vessels.
Year: 1899

page_text: Date of Application, 15th Sept., 1899
Complete Specification Left, 28th May, 1900-Accepted, 15th Sept., 1900
PROVISIONAL SPECIFICATION.
Improvements in Steering or Guiding and Locking Devices for
Vehicles and Vessels.
I, ANDREW SCOBLE BROWN, residing at 829, Madison Street, Brooklyn, in the
County of Kings, State of New York, United States of America, Ship Joiner,
do hereby declare the nature of this invention to be as follows:-
This invention relates to steering and locking devices for the shafts of fire
trucks, motor vehicles, and other vehicles, also for other shafts of various kinds
and classes, and steering or guiding shafts in general; and the object thereof
is to provide an improved device of this class by means of which such shafts may
be turned when necessary or desirable and locked in any desired position: a
further object being to provide a device of the class described which may be
applied to the rudders of vessels for turning the same and holding them in any
desired position.
In the practice of my invention I provide a support through which is vertically
passed a guide or steering shaft. The upper portion of the support is reduced
in size, and on this reduced portion is mounted a ring which is preferably pro-
vided with a depending flange and with an upwardly directed flange the opposite
sides of the latter flange being formed into cam surfaces. The said ring is also
preferably provided with a rim which is connected with the ring by radial spokes,
which latter serve for operating the device as hereinafter described.
Mounted on the upper end of the shaft is a cylindrical head, which is keyed
to the shaft and provided with a downwardly directed hub which closely fits the
shaft. and in the opposite sides of said head are formed sockets which open down-
wardly and in each of which is mounted a spiral spring and a locking bolt.
Arranged in a circle on the top of the main support are upwardly directed lug
or projections, and the locking bolts on the cylindrical head pass downwardly
between the hub on the head and the upwardly directed flange of the ring. The
lower ends of the locking bolts are beveled, and the said bolts operate in connec-
tion with the upwardly directed lugs or projections as hereinafter described.
Each of the locking bolts is provided with an outwardly directed pin and the
cylindrical head is provided at its lower end and on the opposite side thereof with
lugs or projections, and the upward directed flange of the ring is provided on
the side thereof and at the highest point of the cam surfaces with an upwardly
directed point or projection which operates in connection with said last named
lugs or projections on the cylindrical head.
The operation of the form of construction above described is as follows: The
shaft is manipulated entirely by the ring and the ring is manipulated by the rim
thereof. The ring may be turned through almost a half revolution in either
direction, and in this operation the shaft may be also turned in either direction.
When one of the lock bolts in the sockets of the cylindrical head is in raised
and the other is in lowered position the shaft may he turned in one direction the
beveled portion at the lower end of the locking bolts permitting one of said bolts

page_text: to move over the upwardly directed lugs or projections on the top of the support,
while the other is raised above said lugs or projections. The shaft may therefore
be turned in either direction and locked in position.
In another construction of my invention, I provide a support through the
top of which a shaft passes transversely and the support is provided on opposite
sides of said shaft with sockets in which are mounted locking bolts and springs
which operate to force said bolts outwardly. In this form of construction the
shaft is provided with a cylindrical head having on the end thereof adjacent to
the support lugs or projections which are arranged in a circle. The ends of the
locking bolts are beveled and operate in conjunction with said lugs or projections.
I also employ a ring which is provided on one side thereof with a handle and
the opposite sides of said ring in the direction of the main support are formed
into cam surfaces.
The locking bolts in the sockets of the main support are provided with pins
which move in slots formed in a hub which is provided on the support, and the
locking bolts move freely in said hub, while the cylindrical head is keyed to
or formed integrally with the shaft, and the ring is adapted to turn freely on said
hub through almost one-half of a revolution in either direction.
The hub or the support adjacent thereto is provided at one side with a lug or
projection and the ring at the highest point between its cam surfaces is provided
with a point or projection which operates in connection with the just mentioned
lug or projection, to limit the movement of the ring. The pins on the locking
bolts move over the cam surface of the ring, and said ring is free to turn through
a partial revolution, and the shaft may be turned or operated by any desired
means and may be locked in any desired position by turning the ring. One of
the locking bolts is free to move over the lugs or projections on the cylindrical
head of the shaft when the shaft turns in one direction, but the opposite bolt
strikes said lugs or projections and stops the shaft as the ring is manipulated.
In each of the forms of construction herein before described, it will be noted
that I employ a support, a shaft passing therethrough and provided with a head,
said support and said head being provided one with spring operated locking bolts
and the other with lugs or projections in connection with which said bolts operate,
and a cam ring which onerates to move said bolts against the tension of the springs
by which they are operated.
In another form of my invention the support is provided with a circular sta-
tionary base and a shaft passes through the support and also through said base.
The perimeter of the top of the base is preferably wider than the body portion
thereof, and it is provided in its upper surface with radial teeth between which
are corresponding radial spaces, and the perimeter of the top of said base is also
preferably provided with outwardly directed lugs or projections, any desired
number of which may be employed.
The shaft is provided above the base with a circular head which is keyed thereto
and adapted to turn thereon and said head is provided at opposite sides with
vertical grooves or spaces in which are mounted vertically movable locking bolts
between which latter and the circular head is provided with an upwardly directed
standard.to which is secured a cap having lateral projections.
The locking bolts are square or rectangular in cross section and are provided
with upwardly directed cylindrical extensions which pass through the lateral
projections of the caps, and mounted on said cylindrical extensions of the locking
bolts between the circular portions thereof and the lateral extensions of the caps
are spiral springs which operate to force said locking bolts downwardly.
The lower end of the locking bolts at each side of the head are beveled at their
lower outer corners, and said lower ends are adapted in the operation of the
device to enter the radial spaces in the top of the base and operate in connection
with the radial teeth. The locking bolts are also provided at the top of the
rectangular portion thereof with outwardly directed or radial lugs or projections,
which are each beveled on their lower corners.

page_text: The vertical grooves or recesses in the head in which the locking bolts move
are rectangular in cross section at the lower ends thereof,. but the upper portions
of said grooves or spaces are circular in form in order to accomodate the springs
on the cylindrical extensions of the locking bolts.
Mounted on the circular head of the shaft, and adapted to turn thereon, is
a ring or band, the opposite sides of which are connected over said head by a cross
plate in the central portion of which is a vertical cylindrical head, and said ring
or band and the cross plate and the cylindrical head just mentioned are preferably
formed integrally, said head being further provided centrally of its upper end
with a lug or projection with which a crank or other device may be connected.
The ring or band just above mentioned is cut out at its opposite sides to form
two inclined cam surfaces, and the outwardly directed lugs or projections on the
locking bolts rest on these inclined cam surfaces. The locking bolts are raised
by turning said ring or band. Instead of employing the cross plate and cylin-
drical head, as above mentioned, the ring or band may be simply provided at one
side with a handle.
In the form of construction of my invention as last described, one of the locking
bolts at each side of the circular head on the shaft is always in the raised posi-
tion and the other in the lowered position, and two of said bolts are always in
engagement with the teeth on the base.
By turning the ring or band to the left, when the locking bolts are in the
position in which one is engaged with one of the teeth on the base the diametrically
opposite bolt is resting on one of said teeth, the two bolts which are thus in
engagement with the teeth will be raised against the operation of the springs
of the locking bolt, and the circular head on the shaft will be turned to the left,
thus turning the shaft.
The circular head is provided in one side with a chamber in which works a
lug or projection carried on the inner side of the ring or band, and the movement
of the ring or band independently of said head is limited by the side walls of
this chamber. This independent movement of the ring or band on the head
operates to raise the bolts, and at the limit of said movement the shaft is turned
with said ring or band, and as soon as the movement of the latter and the shaft
stops one set of the bolts will drop back into the position in which they engage
the teeth on the base and the head of the shaft will be locked to the base.
When the head of the shaft is turned to the right, two of the locking bolts
will be raised and the other two will pass backwardly over the teeth of the base,
and as said ring or band is turned to the left the above described operation will
be reversed and the shaft will be turned to the left. It will be apparent that
said shaft may be locked in any desired position by simply stopping the move-
ment of the ring or band at which time two of the locking bolts will always be
projected downwardly and engage with the teeth.
Under some instances, I dispense with the cross plate and cylindrical head on
the ring or band and provide the shaft with a large circular head which is keyed
thereto; in this construction the ring or band is provided in one side with a
lot through which passes a pin secured to the shaft, which limits the movement
of the ring or band. At each side of the large circular head just above men-
ioned, are curved dogs which taper outwardly and rest on the cam surfaces of
he ring or band, and the lugs or projections of the locking bolts rest on the upper
curved sides of the dogs, where by turning the ring or band the locking bolts will
e operated exactly as herein before described.
The entire apparatus is simple in construction and operation and well adapted
o efficiently accomplish all the results for which it is intended.
Dated this 15th day of September 1899
WHEATLEY & MACKENZIE,
40, Chancery Lane, London,
Agents.

page_text: Improvements in Steering or Guiding and Locking Devices for
Vehicles and Vessels.
I, ANDREW SCOBLE BROWN, residing at 829, Madison Street, Brooklyn, in the
County of Kings, State of New York, United States of America, Ship Joiner,
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 steering devices for fire trucks, automobiles or other
vehicles, and the object thereof is to provide an improved device of this class
by means of which vehicles of the class described, may be guided and held to
any desired course of movement; a further object being to provide a device of
the class described which may also be applied to the rudders of vessels for manipu-
lating the same and holding the vessel to any desired course; and with these
and other objects in view, the invention consists in the construction, combination
and arrangement of parts hereinafter described and claimed.
The invention is fully disclosed in the following specification of which the
accompanying drawing forms a part, in which the separate parts of my improve-
ment are designated by suitable reference characters, and in which:-
Fig. 1 is a sectional side view of an apparatus embodying my invention;
Fig. 2 a plan view of a detail thereof;"
Fig. 3 a side view;
Fig. 4 a view similar to Fig. 1; showing a modified form of construction;
Fig. 5 a side view of a detail thereof;
Fig. 6 a view at right angles to Fig. 5;
Fig. 7a side view of a locking bolt which I employ;
Fig. 8 a side elevation of a modified form of construction;
Fig. 9 a plan view thereof;
Fig. 10 a view similar to Fig. 8, part of the construction being shown in section;
Fig. 11 a plan view of a detail of the construction;
Fig. 12 a vertical section on the line 12-12 of Fig. 9; and
Fig. 13 a view similar to Fig. 8 showing a modification.
shaft B.
In the practice of my invention, reference being made to Figs. 1 to 7 inclusive.
I provide a support A through which is vertically passed a guide or steering
The upper portion of the support A is reduced in size, as shown at a
and mounted thereon a ring C, which is preferably provided with a depending
flange and an upwardly directed flange C, the opposite sides of which ar
formed into cam surfaces C, and the ring C is preferably provided with a rim C
which is connected therewith by radial spokes C, and by which the ring Ci
manipulated in the operation of the device, as hereinafter described.
Mounted on the upper end of the shaft B is a cylindrical head D, which i
keyed thereto, as shown at d, and provided with a downwardly directed hub D
which closely fits the shaft B, and in the opposite sides of said head are forme
sockets, which open downwardly and in each of which is mounted a spira
spring №³ and a locking bolt .
Arranged in a circle on the top of the support A are upwardly directed lug
or projections a², six of which are shown in Fig. 2, and the locking bolts pas
downwardly between the hub D¹ and the flange C of the ring C, and the lowe
ends thereof are beveled, as shown at d³, one of said bolts being shown in Fig.
and said lock bolts operate in connection with said lugs or projections, as herein
after described.

page_text: Each of the locking bolts d is provided with an outwardly directed pin
and the head D is provided at its lower end and on the opposite sides thereof
with lugs or projections, and the flange C is provided on the side thereof and
at the highest point of the cam surfaces (with an upwardly directed point or
projection C which operates in connection with said lugs or projections
.
The operation of this form of construction is as follows: It will be under-
stood that the shaft B, in the form of construction shown in Figs. 1 to 3, inclusive,
is manipulated entirely by the ring C, and the ring.C is manipulated by the
rim C thereof. The ring C may be turned through almost a half revolution in
either direction, and in this operation the shaft B may be also turned in either
direction. One of the locking bolts d, in the position of the ring C shown in
Fig. 1, and also when said ring is in the opposite position, is raised and the
other lowered, and in this position the shafi may be turned in one direction,
the beveled portion at the lower end of the locking bolts permitting one of
said bolts to move over the upwardly directed lugs or projections, while the other
is raised above said lugs or projections. It will therefore be seen that by means
of the construction shown in Figs. 1 to 3, inclusive, the shaft B may be turned
in either direction and locked in position.
In the construction shown in Figs. 4 to 6, inclusive, I have shown a support G,
and a shaft H passing transversely through the top thereof, and the support G
is provided on the opposite sides of said shaft with sockets g, in which are mounted
locking bolts and springs g³, which operate to force said bolts outwardly. In
this form of construction the shaft H is provided with a cylindrical head having
on the end thereof adjacent to the support G lugs or projections h², which are
arranged in a circle similar to the lugs or projections a², (shown in Fig. 2,) and
the ends of the locking bolts are beveled the same as in the construction
shown in Fig. 1, and said ends of said bolts operate in connection with the lugs
or projections h². In this form of construction I employ a ring K, which takes
the place of the ring C (shown in Fig. 1) and is provided on one side with a
handle, and the opposite sides of said ring in the direction of the support G
are formed into cam surfaces 12. In this form of construction the locking bolts g²
are provided with pins g, which move in slots g, formed in a hub g, formed
on the support G, and the locking bolts 2 move freely in said hub, while the
head is keyed to or formed integrally with the shaft H, and the ring K is
adapted to turn freely on the hub through almost one-half of a revolution in
either direction. The hub or the support G adjacent thereto is provided at
one side with a lug or projection 3, and the ring K, at the highest point between
the cam surfaces, is provided with a point or projection 3, which operates, in
connection with the lug or projection ³, to limit the movement of the ring K.
In this form of construction the pins go on the locking bolts g² move over the cam
surfaces of the ring K, and said ring K is free to turn through a partial
revolution the same as in the construction shown in Fig. 1, and the shaft I may
be turned or operated by any desired means and may be locked in any desired
position by turning the ring K. One of the locking bolts g is free to move over
the lugs or projections on the head H when said shaft turns in one direction;
but the opposite bolt strikes said lugs or projections and stops the shaft as the
ring K is manipulated. In the position of the ring K shown in Fig. 4 the shaft
may be turned in one direction, but cannot turn in the other, and by reversing
the position of said ring the movement of the shaft may be reversed.
In each of the forms of construction hereinbefore shown and described it will
be seen that I employ a support, a shaft passing therethrough and provided with
a head, said support and said head being provided one with spring operated
locking bolts and the other with lugs or projections in connection with which
said bolts operate and a cam ring which operates to move said bolts against the
tension of the springs by which they are operated.
The lower ends of the locking bolts in both forms of construction hereinbefore
shown and described are both beveled on the same side, so that the straight side

page_text: of one of said bolts will come in engagement with the lugs or projections in
connection with which they operate when the ring by which said bolts are operated
is turned in either direction.
In the form of construction shown in Figs. 8 to 13 inclusive, I have designated
the separate parts of my improvement by reference numerals, and in this form
of construction I have shown at 8 a part of a truck frame or any suitable support,
and at 9 a shaft which may represent a tiller shaft, the shank of the spindle
of a motor vehicle, or the steering shaft of a fire truck, and this shaft 9, as shown
in the drawing, passes vertically through the support 8, but said shaft 9 may be
arranged horizontally if desired.
The shaft 9 also passes through a circular stationary base 10, secured to the
support 8, and a plan view of which is given in Fig. 11, and the perimeter of the
top of the base 10 is preferably wider than the body portion thereof, and provided
in its upper surface with radial teeth 11 between which are corresponding radial
spaces 12, and the perimeter of the top of said base is also preferably provided
with outwardly directed lugs or projections 13, any desired number of which
may be employed.
The shaft 9 is provided above the base 10 with a circular head 14 which is
keved thereto, and adapted to turn on the base 10, and said head is also provided
at its opposite sides with two vertical slots, grooves or spaces 16, in which are
mounted vertically movable locking bolts 17, and radially between the locking
bolts 17, upon each of the said opposite sides, the head 14 is provided with an
upwardly directed standard 18, to which is secured a cap 19, having lateral pro-
jections 20.
The. locking bolts 17 are square or rectangular in cross section, and are provided
with upwardly directed cylindrical extensions 21 which pass through the lateral
projections 20 of the caps 19, and mounted on the cylindrical extensions 21 of
said locking bolts between the rectangular portions thereof and the lateral pro-
jections 20 of the caps 19 are spiral springs 22, which operate to force said locking
bolts downwardly.
The lower ends of the locking bolts 17 at each side of the head 14 are beveled
at their lower outer corners as shown at 23, and the lower ends of these locking
bolts in the operation of the device, as hereinafter described, are adapted to enter
the radial spaces 12 in the top of the base 10, and operate in connection with the
radial teeth 11.
The locking bolts 17 are also provided at the top of the rectangular portion
thereof with outwardly directed or radial lugs or projections 24, and these lugs
or projections are each beveled on their lower corners as shown at 25.
The vertical grooves or recesses 16 in the head 14 in which the locking bolt 17
moves, as hereinbefore described, are rectangular in cross section at the lower
ends thereof, but the upper portions of said grooves or spaces are circular in form
as indicated by the dotted lines in Fig. 9 in order to accomodate the springs 22.
Mounted on the head 14 and adapted to turn thereon and upon the projec-
tions 13, is a ring or band 26, the opposite sides of which are connected over said
head 14 by a crossplate 27, in the central portion of which is a vertical cylindrical
head 28, and said ring or band 26, the cross plate 27 and the cylindrical head 28,
are preferably formed integrally, and the head 28 is provided centrally of its
upper end with a lug or projection 29, with which a crank or other device may
be connected.
The ring or band 26 is cut out at its opposite sides to form two inclined cam
surfaces 30, and the outwardly directed lugs or projections 24 on the locking
holts 17, rest on these inclined cam surfaces, and said bolts are raised by turning
the ring or band 26, and said ring or band may be turned by a crank applied
to the head 28 at 29 or in any desired manner, and instead of employing the
cross plate 27 and the head 28 as shown in Fig. 8, the ring or band 26 may be
provided at one side with a handle 30 as shown in Fig. 13.
In this form of construction, one of the locking bolts 17 at each side of the

page_text: head 14 is always in the raised position, and the other in the lowered position,
this position of said parts being shown in Fig. 3, and two of said bolts are always
in engagement with the teeth 11. When one of the locking bolts is engaged
with one of the teeth 11 as shown at the right of Fig. 10, the diametrically
opposite bolt is resting on one of the teeth 11, and when one of the locking bolts,
as shown in Fig. 10, is resting on one of the teeth 11, the diametrically opposite
locking bolt is resting in the corresponding recess 12 on the opposite side.
By turning the ring or band 26 clockwise when the locking bolts are in the
position shown in Fig. 10, the two which are in engagement with the teeth 11
of the base 10, will be raised against the operation of the springs 22, and the
head 14 will be turned clockwise thus turning the shaft 9.
The head 14 is provided in one side with a chamber 31, as shown in Fig. 9,
in which works a Jug or projection 32, on the inner side of the ring or band 26.
and the movement of the ring or band independently of the head 14 is limited
by the side walls 33 of the chamber 31. This independent movement of the ring
or band 26 on the head 14 operates to raise the bolts 24, and at the limit of said
movement, the shaft 9 is turned with said ring or band and as soon as the move-
ment of the ring or band and the shaft stops, one set of the bolts 17 will drop
back into the position shown at the right of Fig. 10, and the head 14 of the
shaft 9 will be locked to the base 10.
When the head 14 of the shaft 9 is turned counter-clockwise, two of the locking.
bolts 17 will be raised and the other two will pass backwardly over the teeth 11
of the base 10, and as said ring or band is turned clockwise, the above described
operation will be reversed. and the shaft will be turned clockwise, and it will
be apparent that said shaft may be locked in any desired position by simply
stopping the movement of the ring or band 26, at which time two of the locking
bolts will always be projected downwardly and engaged with the teeth 11.
might be a little movement of the shaft 9 when the ring or band is stopped, and
this movement may be in either direction.. but said movement will be slight, as
it will be apparent that the extent thereof could not be greater than the distance
across the tons of the radial teeth.
There
In Fig. 13 I have shown a modification in which the cross plate 27 and
cylindrical head 28 are omitted, and the shaft 9 is provided with a large circular
head 34 which is keyed thereto. In this form of construction, the ring or band 26
is provided in one side with a slot 35 through which passes a pin 36 secured to
the shaft 9. which limits the movement of the ring or band.
The head 34 takes the place of the head 14 hereinbefore described and at each
side as shown at 36. are curved dogs 37, which taper outwardly and rest on the
cam surfaces 30% of the ring or band 26 and the lugs or projections 24 of the
locking bolts 17 rest on the upper curved sides of the dogs 37, and by turning the
ring or band 26 by the handle 30, or in any other desired way, the locking bolts 17
will be operated exactly as herein before described, said locking bolts or the lower
ends thereof being shown in dotted lines.
In the construction shown in Fig. 13, the handle 30 secured to one side of the
ring or hand 26 takes the place of the cross plate 27, and the cylindrical head 28
shown in Fig. 8. and said ring or hand may be turned in either direction by the
handle 30 or by any other preferred means.
In both of the forms of construction shown in Figs. 8 to 13 inclusive, the locking
bolts 17, the springs 22, mounted thereon, the ring or band 26. are all substantially
the same and the only difference between the construction shown in Fig. 13,
and that of the other figures, consists substantially in the employment of the
pivoted dogs 37, by means of which the locking holts are raised, it being under-
stood that the free ends of these dogs are raised and lowered on the cam surfaces 30°
by turning the ring or band 26.
By means of this devices, the shaft 9 may be turned in either direction, and
locked in any desired position whenever necessary. all that is necessary to accom-
plish this result being to turn the ring or band 26,

page_text: The entire apparatus is simple in construction and operation and well adapted
to accomplish the result for which it is intended, and it will be apparent that
changes in and modifications of the construction herein described, may be made
without departing from the spirit of my invention or sacrificing its advantages.
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. A guiding or steering apparatus for vehicles, vessels and the like, constructed
as herein described and as shown in the drawing.
2. A guiding or steering apparatus for vehicles, vessels and the like, con-
structed as herein described and as shown in Figs. 8 to 13 inclusive, of the
drawing.
3. In a device of the class described, a support, a shaft passing therethrough
and provided with a head; said support and said head being provided one with
a plurality of spring operated locking bolts, and the other with lugs or projec-
tions in connection with which said bolts operate, and a cam ring adapted to
turn on said support and to move said bolts against the tension of the springs
by which they are operated, substantially as shown and described.
4. In a device of the class described, a stationary base or support, a shaft passing
therethrough, and provided with a head, said base being provided on its upper
surface with radial teeth, and said head being provided on each side with two
spring operated locking bolts which are adapted to engage the said teeth; and a
cam ring adapted to turn on said head and to move said bolts against the operation
of said springs, substantially as shown and described.
5. In a device of the class described, a stationary base or support, a shaft passing
therethrough, and provided with a head, said base being provided on its upper
surface with radial teeth, and said head being provided on each side with two
spring operated locking bolts which are adapted to engage the said teeth, and a
cam ring adapted to turn on said head and to move said bolts against the operation
of said springs, said cam ring being provided on each side with two inclined sur-
faces, substantially as shown and described.
6. In a device of the class described, a stationary base provided with radial
teeth, a shaft passing through said base and adapted to turn therein, and provided
with a head which is secured thereto, two spring operated bolts mounted in each
side of said head and adapted to engage with said teeth, a cam ring mounted
on said head and adapted to turn thereon, and provided at each side with two
inclined cam surfaces, said locking bolts being provided with outwardly directed
lugs or projections which are adapted to engage said cam surfaces, substantially
as shown and described.
7. In a device of the class described, a stationary circular base, provided with
radial teeth, a shaft passing therethrough and adapted to turn therein, and pro-
.vided with a circular head, a plurality of spring operated locking bolts mounted in
said head and adapted to engage said teeth, the ends of said bolts which engage
said teeth on the opposite sides of said head being beveled at their outer
corners, and a ring or band mounted on said head and provided on each side
thereof with two cam surfaces, said locking bolts being provided with outwardly
directed lugs or projections adapted to be engaged by said cam surfaces; and
means for turning said ring or band on said head, substantially as shown and
described.
8. In a device of the class described, a stationary support, a circular base
secured thereto, and provided with radial teeth, a shaft passing through said
base and provided with a head which is secured thereto, two spring operated
bolts mounted in each side of said head and adapted to engage with said teeth,
the ends of said bolts on each side being beveled at their outer corners, a cam
ring mounted on said head and adapted to turn thereon, said cam ring being
provided at each side with two inclined cam surfaces, and said locking bolts being

page_text: provided with outwardly directed shoulders or projections which are adapted to
engage said cam surfaces, substantially as shown and described.
9. In a device of the class described, a support, a shaft passing therethrough
and provided with a cylindrical head, said support and said head being provided
one with lugs or projections, and the other with spring operated bolts which
operate in connection with said lugs or projections, the ends of said bolts which
operate in connection with said lugs or projections being beveled on opposite
sides, and means for moving said bolts against the tension of the springs by which
they are operated, substantially as shown and described.
10. In a device of the class described, a support, a shaft passing therethrough
and provided with a cylindrical head, said support and said head being provided
one with lugs or projections. and the other with spring operated bolts, which
operate in connection with said lugs or projections, the ends of said bolts which
operate in connection with said lugs or projections being beveled on opposite
sides, and means for moving said bolts against the tension of the springs by which
they are operated, consisting of a cam ring mounted on said support and adapted
to turn thereon, substantially as shown and described.
Date
GILIS
Jot tray
1300.
WHEATLEY & MACKENZIE.
40, Chancery Lane, London, W.C.,
Agents.
WHEATLEY & MACKENZIE,
40, Chancery Lane, London, W.C.,
Agents.