IMPROVEMENTS IN SELF-ACTING STEAM Hammers
Year: 1872

page_text: LETTERS PATENT to Gilbert Glossop and Herbert Edlyne Laycock
Cooper, of the Firm of Cooper Brothers and Glossop, of Alma
Works, Alma Street, Sheffield, in the County of York, Engineers,
for the Invention of "IMPROVEMENTS IN SELF-ACTING STEAM Hammers."
PROVISIONAL SPECIFICATION left by the said Gilbert Glossop and
Herbert Edlyne Laycock Cooper at the Office of the Commissioners
of Patents, with their Petition, on the 22nd October 1872.
We, GILBERT GLOSSOP and HERBERT EDLYNE LAYCOCK COOPER, of
the Firm of Cooper Brothers and Glossop, of Alma Works, Alma Street,
Sheffield, in the County of York, Engineers, do hereby declare the
nature of the said Invention for "IMPROVEMENTS IN SELF-ACTING STEAM
HAMMERS," to be as follows :-
In a bearing on the framing we support a horizontal shaft with an
eccentric fixed thereon, and we provide an eccentric collar or tube
(herein-after termed "
collar") working in the eccentric. The collar
carries a tube or guide (herein-after termed "guide") which permits

page_text: motion therein in a plane perpendicular to the shaft; also we employ
a rod sliding through the guide, and at one end jointed to the "tup”
or hammer head (or to the piston rod by which it is carried), the rise
and fall of which consequently transmits a rising and falling motion
to the said end of the rod, and by means of the rod a reciprocating
turning motion to or of the collar upon the eccentric, the varying length
between the collar and the joint or connection with the tube being
provided for by the sliding motion referred to.
By means of a system of levers, or in any convenient manner, the
motion of the collar is made to work the valve of the steam cylinder,
and the extent of action of the valve and consequently of the lift
or blow of the hammer is regulated by the "throw" of the eccentric.
This we vary at pleasure by varying the axial position of the horizontal
shaft, and for this purpose provide a foot lever and rods or any suitable
equivalent appliance for turning the horizontal shaft. And also by lock
nuts or any suitable clamping appliance we fix the said shaft when it is
desired to maintain for a time any particular amount or extent of throw
of the eccentric.
SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Gilbert Glossop and Herbert Edlyne Laycock
Cooper in the Great Seal Patent Office on the 22nd April 1873.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, GILBERT
GLOSSOP and HERBERT EDLYNE LAYCOCK COOPER, of the Firm of
Cooper Brothers and Glossop, of Alma Works, Alma Street, Sheffield,
in the County of York, Engineers, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her
Letters Patent, bearing date the Twenty-second day of October, in the
year of our Lord One thousand eight hundred and seventy-two, in the
thirty-sixth year of Her reign, did, for Herself, Her heirs and suc-
cessors, give and grant unto us, the said Gilbert Glossop and Herbert
Edlyne Laycock Cooper, Her special licence that we, the said Gilbert
Glossop and Herbert Edlyne Laycock Cooper, our executors, admini-
strators, and assigns, or such others as we, the said Gilbert Glossop and
Herbert Edlyne Laycock Cooper, our executors, administrators, and
assigns, should at any time agree with, and no others, from time to time

page_text: and at all times thereafter during the term therein expressed, should and
lawfully might make, use, exercise, and vend, within the United King-
dom of Great Britain and Ireland, the Channel Islands, and Isle of Man,
an Invention for "IMPROVEMENTS IN SELF-ACTING STEAM HAMMERS," upon the.
condition (amongst others), that we, the said Gilbert Glossop and
Herbert Edlyne Laycock Cooper, our executors or administrators, by an
instrument in writing under our, or their, or one of their hands and
seals, should particularly describe and ascertain the nature of the said
Invention, and in what manner the same was to be performed, and
cause the same to be filed in the Great Seal Patent Office within six
calendar months next and immediately after the date of the said Letters
Patent.
NOW KNOW YE, that we, the said Gilbert Glossop and Herbert
Edlyno Laycock Cooper, do hereby declare the nature of our said
Invention, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement
and the accompanying Drawings :—
The Invention is designed for the purpose of applying to self-acting
steam hammers an arrangement of apparatus that will simplify,
economize, and make more durable the construction of those parts,
thereof giving motion to the valve, admitting steam to the cylinder,
and ensuring by such novel appliance greater accuracy of stroke to the
hammer than hitherto.
The novelty of the arrangement and adaptation of the same to a
steam hammer may be thus described:-In a bearing on the framing
we support a horizontal shaft with an eccentric fixed thereon, and we
provide an eccentric collar or tube (herein-after termed
"collar")
working in the eccentric. The collar carries a tube or guide (herein-
after termed " guide" which permits motion therein in a plane
perpendicular to the shaft; also we employ a rod sliding through
the guide, and at one end jointed to the "tup" or hammer head (or
to the piston rod by which it is carried), the rise and fall of which
consequently transmits a rising and falling motion to the said end of the
rod, and by means of the rod a reciprocating turning motion to or of
the collar upon the eccentric, the varying length between the collar and
the joint or connection with the tube being provided for by the sliding
motion referred to.

page_text: By means of a system of levers, or in any convenient manner, the
motion of the collar is made to work the valve of the steam cylinder,
and the extent of action of the valve, and consequently of the lift
or blow of the hammer, is regulated by the "throw" of the eccentric.
This we vary at pleasure by varying the axial position of the horizontal
shaft, and for this purpose provide a foot lever and rods or any suitable
equivalent appliance for turning the horizontal shaft. And also by lock
nuts or any suitable clamping appliance we fix the said shaft when it is
desired to maintain for a time any particular amount or extent of throw
of the eccentric.
In order that the Invention may be better understood and explained
in detail, we have hereunto annexed a Sheet of Drawings made upon a
scale of about three inches to the foot, similar letters of reference being
marked upon corresponding parts on all the Figures.
Fig. 1 represents a side elevation of the improved apparatus giving
motion to the valve of the cylinder of steam hammers.
Fig. 2 represents a plan view, and Fig. 3 an end elevation of the
same detached. In these Figures a is a horizontal shaft supported in
bearings attached to the framing; from this shaft an eccentric collar
and stud c projects to which is fixed at right angles to the shaft and
parallel with the framing a tube d; this tube forms a guide which
permits motion therein in a plane vertical to the shaft a of the sliding
bar e connected by a rod e' with the "tup" hammer head o at the
point, the rise and fall of which transmits through the medium of tho
rod e' a reciprocating turning motion to the collar and eccentric stud c.
The varying length or distance between the axis of the eccentric rod
and its connection with the "tup" being provided for by the sliding
bar e.
The connection between the eccentric collar c and the steam
valve spindle g is effected through the medium of the rod and
lever i.
It will now be seen that according to the position of the eccentric
collar with respect to its actuating medium the extent of action
desired to be given to the valve for regulating the lift or blow of the
hammer can be governed with precision.
In order to obtain a ready adjustment of the throw of the eccentric a
collar c, we connect the same by means of a lever and rod k with a

page_text: foot or hand lever or other equivalent by which it is readily turned as
desired. Or when it is desired for a time to maintain any particular
amount or extent of throw of the eccentric, we lock it in the position
required by means of the nuts p so soon as such position has been
determined, by turning the same with the hand or foot lever before
mentioned. Thus it will be seen that when a desired lift is to be given
to the hammer o, the eccentric collar on the horizontal shaft is turned
into a position that will give sufficient movement or throw to the valve
spindle necessary for the intensity of the blow required.
Having now described the nature of our said Invention, together with
the method of carrying the same into practical effect, we wish it to be
distinctly understood in conclusion that we claim the novel arrange-
ment, construction, and adaptation to self-acting steam hammers of the
eccentric collar c, and mechanism connected therewith to be employed
in the manner and for the purpose as substantially described, set forth,
and fully illustrated in the Drawings hereunto annexed.
In witness whereof, we, the said Gilbert Glossop and Herbert
Edlyne Laycock Cooper, have hereunto set our hands and scals,
this Seventeenth day of April, in the year of our Lord One
thousand eight hundred and seventy-three.
Witness,
HERBERT EDLYNE LAYCOCK COOPER. (L.S.)
RICHARD HOWE,
Clerk to Messrs. Holmes & Johnson,
7, St. James' Row,
Sheffield.