Improvements in Machinery or Apparatus for Pressing Bricks and other articles of a like nature.
Year: 1891

page_text: Date of Application, 12th Dec., 1891
Complete Specification Left, 7th Sept., 1892-Accepted, 29th Oct., 1892
PROVISIONAL SPECIFICATION.
Improvements in Machinery or Apparatus for Pressing Bricks and
other articles of a like nature.
I, HENRY TUKE, of the Neville Engineering Works, Elland Road, Leeds, in
the County of York, Engineer, do hereby declare the nature of this invention to be
as follows:-
This invention of improvements in machinery or apparatus for pressing bricks
and the like relates to an arrangement of mechanism by which ordinary screw
pressing machines but more especially such machines known as "The Titley Screw
Press" patented July 27th 1875 No. 2658, which have heretofore been chiefly worked
by hand, can be worked by power. My object being while so working by power to
obtain an indefinite movement of the pressing slide and plunger from the momentum
of the fly-wheel on the screw similar to that obtained therefrom when the machine is
worked by hand so as to be sure to press bricks varying in thickness. In order to
do this place upon the pressure screw in addition to the usual fly wheel, one or
more fixed pulleys and to the opposite sides of their peripheries I connect a strap,
rope or other suitable material whose other ends are respectively attached to two
other pulleys mounted loosely upon a continuously rotating shaft, (carried either
by the machine or otherwise) between the said loose pulleys and rotating with the
shaft I place a clutch capable of engaging alternately with these loose pulleys
and which are automatically disengaged from the said clutch as hereinafter
referred to.
In order to effect the pressing movement I place the said clutch in connection
with the pulley that will, by means of the above described connection turn the
pressure screw in the direction for such movement, and previous to the completion
thereof the clutch becomes automatically withdrawn from the said pulley, the
continuation of the pressing motion being then effected by the momentum of the
fly wheel in imitation of the hand movement until arrested by the gradually
increasing pressure upon the brick or article under treatment, after which the
aforesaid clutch is automatically or otherwise placed in connection with the
contrary loose pulley and being yoked to the screw in a similar manner to that
described with reference to the first nained loose pulley but contrariwise, turns the
screw in the reverse direction and raises the pressure slide and plunger, the clutch
is by suitable mechanism timely and automatically withdrawn from the last named
loose pulley when the screw remains at rest, until the attendant re-engages the
clutch as before for the pressing movement. By a simple arrangement of cams
and levers for actuating the clutch the pressure slide and plunger can be
continuously and automatically actuated and allow ample time for placing a brick
or other article in position for being operated upon.
Dated his 11th
200
HENRY TUKE.
COMPLETE SPECIFICATION.
0 Improvements in Machinery or Apparatus for Pressing Bricks and
other articles of a like nature.
I, HENRY TUKE, of the Neville Engineering Works, Elland Road, Leeds in the
County of York, Engineer, do hereby declare the nature of this invention and in
what manner the same is to be performed, to be particularly described and
5 ascertained in and by the following statement:-
This invention of improvements in machinery or apparatus for pressing bricks

page_text: and the like relates to an arrangement of mechanism by which ordinary screw
pressing machines but more especially such machines known as "The Titley Screw
Presspatented July 27th 1875 No. 2658, which have heretofore been chiefly
worked by hand can be worked by power. My object being while so working by
power to obtain an indefinite movement of the pressing slide and plunger from the
momentum of the fly wheel on the screw similar to that obtained therefrom when
the machine is worked by hand so as to be sure to press bricks varying in
thickness.
In order to do this I place upon the pressure screw in addition to the usual fly
wheel one or more fixed pulleys, and to the opposite sides of their peripheries I
connect a strap, rope or other suitable material whose other ends are respectively
attached to two other pulleys mounted loosely upon a continuously rotating shaft
(carried either by the machine or otherwise) between the said loose pulleys, and
rotating with the shaft I place a clutch capable of engaging alternately with these
loose pulleys and which are automatically disengaged from the said clutch as
hereinafter referred to.
In order to effect the pressing movement I place the said clutch in connection
with the pulley that will by means of the above described connection turn the
pressure screw in the direction for such movement, and previous to the completion
thereof the clutch becomes automatically withdrawn from the said pulley, the
continuation of the pressing motion being then effected by the momentum of the
fly wheel in imitation of the hand movement until arrested by the gradually
increasing pressure upon the brick or article under treatment, after which the
aforesaid clutch is automatically or otherwise placed in connection with the contrary
loose pulley and being yoked to the screw in a similar manner to that described
with reference to the firstnamed loose pulley but contrariwise, turns the screw in
the reverse direction and raises the pressure slide and plunger, the clutch is by
suitable mechanism timely and automatically withdrawn from the last named loose
pulley when the screw remains at rest until the attendant re-engages the clutch as
before for the pressing movement.
When the said clutch has been withdrawn from the loose pulleys and the
momentum of the fly wheel is finishing the pressing of the brick, or other article,
the strap or rope connecting the pulleys on the screw to the loose pulleys on the
revolving shaft is prevented from becoming slack or coiling itself on to the flange
of the fast pulley on the screw, by means of a weight on the end of a cord or chain,
the other end of the said cord or chain being secured to a grooved pulley fixed on
the side of the loose pulleys on the revolving shaft, such cord or chain passing over
suitable guide pulleys, so that the weight is out of the way of the attendant whilst
working the machine.
A spring arrangement being sometimes used for producing a similar effect. By
a simple arrangement of cams and levers for actuating the clutch the pressure slide
and plunger can be continuously and automatically actuated and allow ample time
for placing a brick or other article in position for being operated upon.
In the accompanying sheets of explanitory drawings, in which similar letters of
reference indicate like parts; Fig. 1. Sheet 1. is a front elevation of the machine
Fig. 2 being a side elevation, whilst Fig. 3. Sheet 2. is a plan with the flywheel
removed. A, is the table of the machine, B. being the main body bolted thereto, in
which works the slide C. carrying the plunger D, the slide C. being actuated by
the screw E, on the main body B is carried the brackets F and G having suitable
bearings H and H', in which is mounted the main shaft 1, on the outer end of this
main shaft is the driving pulley J. by which it receives its motion, mounted on this
shaft I are two loose pulleys K and K', kept in position endwise by the bearings H
and H on the outside and by loose collars L and L' on the inside, the said loose
pulleys K and K having a plate in the centre or arms as the case may be, on the
inside of such pulleys I provide arms or feathers M, M, extending from the boss to
the rim, and level with the face of such rim for the pins of the clutch to take
against whilst driving the said loose pulleys; on the boss N. on the outside of these

page_text: id loose pulleys are mounted and fixed thereto grooved pulleys O, and O, to
hich are attached cords P and P, passing over suitable guide pulleys Q, Q, Q,
arried on brackets R. fixed on the brackets F and G; on the ends of these cords
re fastened the weights S and S', these weights always pulling the loose
ulleys K and K' round towards themselves, so keeping the straps 6 and always
ght connecting the loose pulleys K and K on the main shaft I, with the fast
ulleys a and a¹ on the screw E; on the main shaft 1, between the two loose
ulleys, is the moveable clutch T, sliding end wise on the feather key U; on each
nd of the clutch T, are pins V. for taking on to the arms or feathers M. in
he loose pulleys K and K'; the clutch T being actuated by levers W, rocking
haft X, hand-lever Y, or by the levers Z and Z.
On the screw E are mounted the two pulleys a, and a', fixed thereto by keys, or
et screws, these said pulleys being connected with the loose pulleys K and K on
the main shaft I. by means of the straps b, and the ends of these straps being
fastened to the peripheries of the respective pulleys by plates and screws c, or by
any other suitable means, in the inside of the rim of these fast pulleys a, and a', in
suitable positions, are placed cams d, and d', one being fixed in the top pulley and
the other in the bottom pulley, on the screw E descending the cam d in the bottom
pulley comes in contact with the pin e, on the lever Z, on the rocking shaft X,
which in turn causes the lever W to move the clutch T end wise until the pin V,
comes in contact with the arm or feather M in the loose pulley K, thus causing the
loose pulley K, to revolve, so coiling the strap b, on to itself and pulling round the
fixed pulley a, and the screw together, which immediately causes the screw E to
ascend bringing with it the slide C, and plunger D; the screw in rising and
turning at the same time, brings the cam in the inside of the top pulley a, against
the pin f. on the lever Z, this causes the lever W, on rocking shaft X, to withdraw
the clutch T from the pulley K and to engage it with pulley K' thus reversing the
screw, this movement taking place continuously until the attendant stops the
machine by moving the hand lever Y, and placing the clutch T in the middle
position as shown.
When it is only necessary for the screw to move down and then return to the top
position, the cam d' inside the rim of the top pulley a, on screw E is not made as
prominent as the one in the bottom pulley a, but of a rise to give sufficient
movement to the pin on the lever Z, on the rocking shaft X, as to cause the
lever W, to move the proper distance to place the clutch T in the middle position,
the attendant thereby having to move the handlever Y for one movement of the
screw down and up.
In this case to prevent the screw descending again by the weight of the fly
wheel, after it has reached its top position, a ratchet segment h, is suitably fixed to
the plate of the top pulley a, in which the paul i, working on the underside of the
lever Z, takes into, so preventing the screw from revolving until such paul is
released, by moving the handlever Y sideways which is done by the attendant
when starting the press.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1. The construction of a screw press or what is known as a "Titley Screw
Press " for pressing bricks or other articles, with the upward and downward
movement imparted to the screw and slide automatically, by means of fixed pulleys
on the screw, worked by straps or ropes in connection with loose pulleys revolving
intermittantly by clutch movement on a revolving shaft, as described and shown in
the accompanying drawings.
2. The loose pulleys on a revolving shaft driven intermittantly by a revolving
clutch sliding endwise on a feather key, such loose pulleys being connected by
5 means of straps to fast pulleys on the pressure screw as described and shown in the
accompanying drawings.

page_text: 3. The fixed pulleys on the pressure screw having suitable cams fixed therein for
moving the levers, in connection with the sliding clutch to produce the automatic
movement up and down to the pressure screw as described and shown in the
accompanying drawings.
4. The means of keeping the straps connecting the loose pulleys to the fast
pulleys from becoming slack, by means of the weight cord and suitable guide
pulleys as described and shown in the accompanying drawings.
5. The means of preventing the screw from descending after making the upward
movement, by means of the segmental ratchet and paul on lever, as described and
shown, in the accompanying drawings.
Dated this 7th day of September 1892.
HENRY TUKE.