Improvements in Machines for Pressing Bricks, Tiles, and Articles of a similar nature.
Year: 1894

page_text: Date of Application, 7th May, 1894
Complete Specification Left. 7th Feb., 1895--Accepted, 23rd Mar., 1895
PROVISIONAL SPECIFICATION.
Improvements in Machines for Pressing Bricks, Tiles, and Articles
of a similar nature.
WILLIAM HUTCHINSON MANN JOHN SAMUEL PULLAN both of Cambrian
Engineering Works Elland Road Leeds do hereby declare the nature of this
invention to be as follows:-
To apply to screw presses hitherto worked by hand power, & used for pressing
bricks, tiles & other similar purposes an appliance whereby they can be worked by
a driving strap or belt & so arranged that existing hand screw presses can be
altered into belt power presses using in the same screw, & fly wheel which were
formerly on the press. To do this 2 belt pulleys, one for a straight & the other
for a cross belt running loose on a cross shaft having a bevil pinion keyed on to one
end which engages into a bevil wheel. The bevil wheel runs loose on a sleeve fixed
on the top of the press head. Fixed to the bevil wheel is a vertical pin which
engages with the arms of the fly wheel for driving the latter. The fly wheel is
attached to the screw in the usual manner for raising or lowering the pressing
head. Between or near the 2 belt pullies is placed a double friction cone clutch
which slides on keys fixed on to the shaft. The friction clutch revolves with the
shaft & is free to move sideways engaging alternately into the corresponding
friction cone on the belt pulleys. The friction clutch is operated by a suitable
hand lever for starting & stopping & the same is acted upon by springs for bringing
it back to its normal position out of gear when released by the operator. The
bevil wheel has a ring of teeth cast on the underside suitable for engaging with a
paul catch. The paul catch is automatically thrown into gear with the bevil wheel
by the pressing plunger when it reaches the top of its stroke & so prevents the
pressing plunger descending again until paul catch is released by the operator for
the return stroke. The paul catch is fitted with a safety stop to prevent it coming
into action during the descent of the pressing plunger.
The press is operated upon as follows:-
When it is at rest with its pressing head at the top of its stroke the friction
clutch is in its mid position out of gear & the two belt pulleys are revolving loosely
round the stationary shaft in opposite directions by the action of the belts. The
paul catch is in gear with the bevil wheel. The operator by one movement of the
hand lever throws the clutch into gear with one of the pulleys & releases the paul
catch & immediately the pressing plunger commences to descend. The hand lever
is released to its mid-position when the plunger has completed a portion of its
descent & the remainder of the stroke is effected by the momentum of the fly
wheel. After the pressing plunger has struck the object to be pressed it rebounds
& immediately the operator throws the friction clutch into the other pulley & the
plunger ascends to its top position & automatically puts the paul catch into gear &
so prevents the descent of the plunger until the operator starts the press again.
Rope pulleys or other forms of driving gear may be used instead of belt pulleys
& a weighted lever instead of a fly wheel.
This invention is intended to be used chiefly with what is known as Titley's
Patent Press (Patent No. 2658 date July 27th 1875,) but may be used on any
press of a similar construction.
Dated this Fourth day of May 1894.
WM. H. MANN.
J. S. PULLAN.

page_text: Improvements in Machines for Pressing Bricks, Tiles, and Articles
of a similar nature.
We, WILLIAM HUTCHINSON MANN and JOHN SAMUEL PULLAN, both of
Cambrian Engineering Works, Elland Road, Leeds, in the County of York,
Engineers, 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 certain improvements in machinery for pressing bricks,
tiles and the like, and has for its object the application of certain mechanism to
ordinary hand power pressing machines of the class known as Titley's Patent Press
No. 2658, July 27th 1875 but may also be applied to machines of similar
construction, and in such a manner that they are capable of being worked by a
driving strap or belt by so arranging the apparatus that it is applicable to present
hand power screw presses of the before mentioned class, without necessitating the
substitution of a new screw and fly wheel.
In order that our invention may be fully understood, we will describe the same in
detail by making reference to the accompanying sheet of drawings, in which
Fig. 1 represents an elevation of an ordinary hand screw pressing machine having
our mechanism added thereto.
Fig. 2 is an end view of same looking in the direction of arrow.
Fig. 3 is an enlarged sectional detail of the driving pullies and double friction
sliding cone clutch.
Figs. 4, 5 and 6 are enlarged details shewing the connections between the
ordinary fly wheel and our additional mechanism, and
Fig. 7 is a plan of the sleeve with top flange removed.
The machine frame A. Hy wheel B. pressure screw C. and plunger D. are of the
ordinary description and mounted in the usual manner.
Running loosely on a sleeve E. secured on the top of the frame A. we mount a
bevel wheel F. and gearing therewith is a pinion G. keyed on cross shaft H.
supported by brackets J. and J' attached to the frame A. Mounted loosely on said
shaft H. are two pullies K. and K' prepared for the reception of a conical friction
cone clutch, the pullies being driven by a straight and cross belt respectively from
any convenient shaft.
Between the said pullies K. and K¹ on said shaft H. we mount a double
friction cone clutch L. free to slide on one or more feather keys M. secured in
shaft H.
To the side of the frame A. we mount a hand lever N. on fulcrum pin O. and is
coupled by rod P. to a bell crank lever Q. one end of which engages with the double
cone friction clutch L.
The hand fly wheel B. is secured to the pressure screw C. in the usual manner for
raising or lowering the presser head or plunger D. and is coupled to the bevel
wheel F. by vertical stud R. passing through bracket R' secured to the fly wheel B.
or equivalent in any convenient manner.
The presser head or plunger D. as shewn in the drawings is at the bottom of the
stroke, and when the same is to be raised, the operator moves the hand lever N. in
the direction of arrow 1, whereby the double friction cone clutch L. is caused
to slide on shaft H. and engage with pulley K' driven by say a cross belt, whereby
motion is imparted to the bevel wheel F. through pinion G. and shaft H. the bevel
wheel F. being connected to the fly wheel B. or equivalent as before described; the
pressure screw C. thus operated, moves the plunger upwards and upon arriving at
the top of the stroke, the operator again moves the hand lever N. but in the

page_text: opposite direction to that before described, thus bringing the friction clutch L. in
contact with the pulley K. driven by say a straight belt, whereupon the bevel
wheel F. is operated in an opposite direction to that before described and the
plunger or presser head D. caused to descend.
Attached to different positions of the hand lever N. are two springs S. and S¹ the
opposite ends of same being secured in any convenient manner, such springs when
in the position shewn by drawings, keep the said lever in a somewhat horizontal
position and the friction clutch L. in mid-position between the pullies K. and K'.
It will therefore be easily understood that immediately the operator releases his
hold of the lever N. after starting the press in either direction, the friction clutch
will be withdrawn into mid-position by means of one of the said springs S. or S¹
whichever may be in tension, and when descending, the plunger D. will finish the
remainder of its stroke by the momentum of the fly wheel.
In order to prevent the double friction cone clutch L. from engaging too long
with the cone pulley K¹ during the up stroke of the plunger or presser head D. by
reason of the attendant holding the same too long in gear, we secure to the presser
head D. a rod T. and mount thereon an adjustable stop U. which on the upward
stroke of the presser head, will come in contact with the end Q' of bell crank
lever Q. thus operating same and withdrawing the friction clutch into mid-position.
The reversal of motion of the shaft H. may be accomplished without the before
mentioned double friction cone clutch L. by substituting therefor, a sliding belt
guide of the ordinary construction and attaching same to the before mentioned bell
crank lever, in which case, the upright arm of said lever will require to be longer
in proportion to the increased travel the end of said lever will have to pass through
for moving the belt from one pulley to another. The shaft H. according to this
arrangement requiring three pullies, two running loose, and the centre pulley secured
to shaft H.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed, we declare that what we
claim is,
1. The general arrangement and combination of the parts forming the complete
apparatus, constructed substantially in the manner and for the purpose as
herein before set forth.
2. The combination with the press screw C. of a bevel wheel F. mounted on a
sleeve E. and suitably connected to the fly wheel B. or equivalent on threaded
screw C. substantially in the manner and for the purpose as hereinbefore set forth.
3. The combination of the lever N. with the springs S. and S₁ and intermediary
connections and the sliding double friction cone clutch L. or equivalent substantially
in the manner and for the purpose as herein before set forth.
4. The combination of the rod T. and stop U. with the lever Q. and friction cone
clutch L. or equivalent for the purpose as bereinbefore set forth.
Dated this 5th day of February 1895.
JOHN WAUGH,
Agent.