Year: 1888

page_text: Date of Application, 5th May, 1888
Complete Specification Left, 5th Feb., 1889
Complete Specification Accepted, 9th Mar., 1889
We JOHN CRAVEN and BENJAMIN CRAVEN both of Wakefield in the County of
York Engineers do hereby declare the nature of this Invention to be as follows:
--
Our Invention has for its object to provide a convenient and efficient apparatus for
pressing bricks and the like capable of being worked either by hand power or by
steam or other power as required.
According to our Invention we key or otherwise affix to the main shaft of the
machine an internally toothed wheel taking the place of the externally toothed wheel
ordinarily used with steam power brick presses and we mount the shaft of the pinion
which transmits the driving power to this internally toothed wheel in bearings mounted
so as to be capable of being raised and lowered to enable the pinion to be engaged
with or to be disengaged from the internally toothed wheel as required. This raising
and lowering may conveniently be effected by means of screws acting on the bearing
blocks which are capable of sliding in guides on the framing of the machine.
When it is required to work the press by hand power the pinion is put out of gear
by moving its bearings and the machine can then be operated by rotating the wheel
by hand for which purpose the periphery of the said wheel may be provided with
holes for the reception of suitable handles. When the machine is to be used for
pressing by steam or other like power the pinion is engaged with the internally
toothed wheel. The said internally toothed wheel can be counterweighted so as to
assist the return stroke.
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, London,
Agents.

page_text: We JOHN CRAVEN and BENJAMIN CRAVEN both of Wakefield in the County of
York 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:
Our Invention has for its object to provide a convenient and efficient apparatus for !
pressing bricks and the like capable of being worked either by hand power or by
steam or other power as required.
We will explain our Invention more particularly with reference to the accompanying
drawing Figure 1 of which is a side view and Figure 2 a vertical section in a plane
at right angles to Figure 1 of a machine constructed according to our Invention.
According to our Invention we key or otherwise affix to the main shaft A of the
machine an internally toothed wheel B taking the place of the externally toothed wheel
ordinarily used with steam power brick presses and we mount the shaft C of the
pinion D which transmits the driving power to this internally toothed wheel B in
bearing blocks E E mounted so as to be capable of being raised and lowered to enable
the pinion D to be engaged with or to be disengaged from the internally toothed
wheel B as required. The raising and lowering of the pinion D to enable the
machine to be worked slowly by turning the wheel B by hand may conveniently be
effected by means of screws G G acting on the bearing blocks E E which are
capable of sliding in guides F F on the framing of the machine.
When the pinion I) is put out of gear with the wheel B the machine can be operated
by rotating the wheel B by hand for which purpose the periphery of the said wheel
may be provided with holes b for the reception of suitable handles.
Ör instead of rotating the wheel B by hand as described the shaft C may be turned
so as to impart slow motion to the wheel B through the pinion D by means of the
hand wheel H fitted on the shaft C, or the speed of the wheel B when driven by
power may be varied as required to suit different kinds of articles by shifting the
driving strap as required onto one or other of the running surfaces of the cone
wheel I.
When the machine is to be used for pressing by steam or other like power the
pinion D is engaged with the internally toothed wheel B. The said internally toothed
wheel can be counterweighted so as to assist the return stroke.
This is shewn in the Drawing as being effected by cutting away a portion of the
wheel at K and if desired an additional weight of metal may be arranged on the
diametrically opposite side of the wheel.
Having now particularly described and ascertained the nature of our said Inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
:-
1. In machines for pressing bricks or the like an internally toothed wheel with
which engages a pinion capable of being moved to and from its engaging position
substantially as hereinbefore described

page_text: 2. In machines for pressing bricks or the like an internally toothed wheel and
means for varying the speed of rotation to suit different articles to be pressed sub-
stantially as hereinbefore described with reference to the accompanying drawings.
3. The arrangement and combination of parts constituting a machine for pressing
bricks or the like substantially as hereinbefore described and illustrated in the accom-
panying Drawings.