Year: 1895

page_text: The decision of the Comptroller-General, of the 21st day of November,
1896, allowed the application to be amended by the insertion of the
names, &c. of-
DICKSON AND MANN, LIMITED, of Bathville Steel Works, Armadale
Station, in the County of Linlithgow, Scotland, Engineers, as co-applicants.
The printed Specification will therefore read in accordance with this
amendment; and, in addition, the personal pronouns "I" and "my"
throughout the Specification should read we and our, respectively, to
further agree with the original.

page_text: Date of Application, 6th Nov., 1395
Complete Specification Left, 23rd July, 1896-Accepted, 29th Aug., 1896
PROVISIONAL SPECIFICATION.
Improvements in Cams, and Fittings for the same, for Stamp Mills
and for like purposes.
I, WATSON FOGGO, of 26 Queen's Road, Erith, in the County of Kent, Engineer
do hereby declare the nature of this invention to be as follows:
-
My invention has reference to the manner in which I construct and arrange a cam
with its boss or carrier, for use upon stamp mills and for like purposes, the object
of the invention being to produce a cam which will be capable of adjustment to suit
any desired position of throw without removing the boss or altering its position upon
the shaft.
In carrying my invention into effect I construct a boss separate from the cam, and
I attach the boss to the shaft preferably by forming the shaft as an oval rather than a
round section, and I provide a number of gabs or openings in the form of serrations
within one face of the boss, and I provide similar projections or serrations upon the
central or boss surface of the cam so that one may enter into the other. I pass bolts
or pins through the boss, and the attached cam, and thus secure it firmly to the boss.
When it is desired to alter the throw or position of the cam I release the bolts or
other fastenings and move the cam round so that the serrations or projections fit into
different teeth or gabs on the boss when the bolts are again placed in position, without
the boss having to be removed upon the shaft.
By this arrangement of construction I am enabled to make the boss of one metal,
and the cam of another material and I can alter the position of the cam to suit any
particular requirement without having to remove anything from the shaft. Sometimes
I make my cam in segments or semi-embracing, so that one part fits on one side into
a number of teeth while the other fits into the other side into a number of the gabs
or teeth.
When employing my boss upon a shaft where a circular or true shaft is used
for driving, I prefer to make the connection by means of a boss with a bevelled
key or round back key, although I do not limit the application of my invention
to any particular shape of shaft form of key or method of securing the boss to
the shaft, but I vary the same to suit special requirements.
The boss may be in halves or built up in segments on shafts where it is
impossible to place a solid boss in position; in each case the segments or boss
I make suitable for the adjustment of the cam positions in the manner hereinbefore
described.
Dated this 6th day of November 1895.
MARKS & CLERK,
18, Southampton Buildings, London, W.C., Agents.

page_text: COMPLETE SPECIFICATION.
Improvements in Cams, and Fittings for the same, for Stamp Mills
and for like purposes.
I, WATSON FOGGO, of 26, Queen's Road, Erith, in the County of Kent, 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 :-
My invention has reference to the manner in which I construct and arrange a cam
with its boss or carrier, for use upon stamp mills and for like purposes, the object
of the invention being to produce a cam which will be capable of adjustment to suit
any desired position of throw without removing the boss or altering its position upon
the shaft.
Referring to the accompanying sheets of explanatory drawings;-
Figure 1 is a front elevation of one form of boss or carrier I sometimes employ,
while
Figure 2 is a side elevation showing the cam in position upon the boss or carrier and
Figure 3 is a front elevation of the cam.
Figure 4 is a side sectional elevation of a constructional modification of boss and cam
while
Figure 5 is a front elevation of a cam corresponding thereto.
Figure 6 is a side sectional elevation of another constructional modification, while
Figure 7 is a front elevation corresponding thereto.
Figures 8 and 9 are side and front elevations of a modified form of boss or carrier
having gabs of spiral configuration; while
Figure 10 is a front elevation of a cam corresponding thereto, and
Figure 11 is a corresponding side elevation of the boss and cam in position.
Figure 12 is a sectional end elevation of a method of fastening employed when a
circular shaft is used.
In carrying my invention into effect as illustrated in Figures 1, 2, and 3
I construct a boss A separate from the cam B, and I attach the boss A to the
shaft C preferably by forming the shaft as of an oval rather than of a round
section, and I provide a number of radial gabs D or recesses E forming serrations
upon one face of the boss, and I provide corresponding radial recesses F upon
the central or boss surface of the cam B so that one may enter into the other.
I pass bolts or pins 6 through the boss, and the attached cam, and thus secure
it firmly to the boss. When it is desired to alter the throw or position of the
cam I release the bolts or other fastenings 6 and move the cam round so that
the gabs or projections D) fit into the recesses F on the integral boss of the cam
when the bolts are again placed in position, without the boss A having to be
removed upon the shaft.
Figures 4 and 5 illustrate a constructional modification in which lateral_radially
disposed projections F¹ are provided on the integral boss of the cam B, which
interpose and engage with corresponding intermediate peripheral projections
formed upon the boss or carrier A.
By this arrangement of construction I am enabled to make the boss of one
metal, and the cam of another metal or material and I am enabled to alter the
position of the cam to suit any particular requirement without having to remove
anything from the shaft.
I sometimes prefer to make my cam in two segmental pieces B B₁ as shown in
Figures 6 and 7, each of the segments being provided with a lateral or circum-
ferential series of alternate radial projections and recesses F which enter and
engage with corresponding recesses and projections D formed upon the boss or
carrier A. The cam may be secured upon the boss or carrier by means of

page_text: pins 6 or by means of a retaining plate H secured to the boss by means of a
series of bolts b¹.
A circular rim K may be provided upon the boss or cam for fitting into a
corresponding circular recess upon the cam or boss, so as to ensure precision of
circular alignment or adjustment of the cam to different positions and to bind
together the segmental pieces.
"
As illustrated in Figures 8, 9, 10 and 11 I sometimes prefer to form my
engaging surfaces as a series of peripheral or lateral projections D' and recesses
of spiral configuration which enter and engage with corresponding lateral or circum-
ferential recesses F' and projections F³ formed upon the integral boss of the cam
which may be formed in two segments B B' as shown. The spiral gabs or pro-
jections are preferably formed in a direction corresponding to that of rotation of the
shaft; while the cam is secured upon the boss by means of a retaining plate and bolts
as shown in Figures 6 and 7 or by means of set screws provided at the back of the
boss and passing through normally to the faces of the engaging projections from
the cam thereby securing the one to the other.
When employing my boss upon a circular or true shaft I prefer to make the
connection by means of a boss A with a bevelled key or round back key L, as
shown in Figure 12, although I do not limit the application of my invention to
any particular shape of shaft, form of key, or method of securing the boss to the
shaft, but I vary the same to suit special requirements.
The boss may be formed in halves or built up in segments on shafts where it is
impossible to place a solid boss in position; in each case the segments or boss I make
suitable for the adjustment of the cam positions in the manner hereinbefore described.
Having now particularly described the nature of my said invention, and in what
manner the same is to be performed, I declare that what I claim is ;-
1. Means for securing cams to independent fixed bosses or carriers, consisting of a
respective series of serrations or of alternate gabs and recesses formed upon the
boss and cam for the purpose of convenient adjustment of the cam upon the boss
into any desired position in the plane of rotation substantially as described.
2. Means for securing cams to independent fixed bosses or carriers, consisting of an
oval shaft upon which the fixed boss or carrier is secured having formed thereupon
a circular series of serrations or alternate gabs and recesses for the reception of
corresponding serrations formed upon the cam substantially as and for the purpose
hereinbefore described.
3. Means for securing cams to independent bosses consisting of a fixed boss or
carrier having formed thereupon a circular series of radial serrations or alternate radial
gabs and recesses for the reception of corresponding radial serrations provided upon a
cam formed in segments such segments being securely retained upon the boss
substantially as and for the purpose herein before described.
4. Means for securing cams to independent fixed bosses or carriers substantially as
and for the purpose hereinbefore described with reference to Figures 8, 9, 10 and 11.
5. The various means for securing cams to independent fixed bosses or carriers
substantially as and for the purpose hereinbefore described and illustrated in
Figures 2, 4, and 6.
Dated this 8th day of July 18961
MARKS & CLERK,
18, Southampton Buildings, London, W.C., and
13, Temple Street, Birmingham, Agents.