Improvements in or relating to Wire Cutting Apparatus for Cutting Bricks or the like.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in or relating to Wire Cutting Apparatus for
Cutting Bricks or the like.
I, THOMAS SMART, of Trent Bridge, in the Borough of Nottingham, Contractor, do
hereby declare the nature of this invention to be as follows:-
This invention relates to apparatus for cutting bricks by means of wires and is
more particularly applicable to apparatus known as the "Murrey type " in which the
wires are stationary and the slab of clay is moved up against them.
In carrying out my invention the wires instead of being placed vertically as
heretofore are placed preferably at an angle approximating to sixty degrees; the
upper parts of said wires being advanced to neet the slab of clay before their lower
parts.
The wires may be carried in the usual manner by hooks on two transverse bars or
on brackets secured thereto and adjustable thereon the upper hooks being adjustable
to regulate the tension of each wire.
The transverse bars are secured to the framing and their position is adjusted to
give the requisite angle to the wires.
In addition to the transverse bars referred to I may if desirable employ two
additional transverse bars one being placed immediately below the platform and one
above the height of the slab of clay. These bars are placed at the back of the wires
and their edges are formed with notches for the wires to lay in they thus not only
form an additional support for the wires but hold them the correct distance
apart.
The upper bar may be carried by brackets part of which are secured to the framing
and part to the bar which carries the hook brackets, it is made adjustable on the
brackets so that its position may be adjusted to alter the angle of the wires or for
increasing the tension on the whole of them simultaneously.
For the latter purpose special arrangement may be made for moving the bar to or
from the wires.
In cutting bricks with the wires arranged in the manner described the slab of
clay is moved up to the wires and the movement continued until the wires have
passed the greater part of the way through the slab by means of the sliding carriage
or abutment.
The carriage is then withdrawn and a second slab of clay placed on the platform
this second slab is pushed up to the first and the latter forced forward by it till the
wires have passed entirely through the first slab and through the greater part of the
second. This process is constantly repeated each slab of clay being moved forward
by the following slab in order to complete the cutting process.
This is necessitated
by the position of the wires which prevent the face of the carriage or abutment being
moved close up to them.

page_text: With the wires arranged in the manner described a cleaner cut is made and
sharper edges are left on the bricks more especially when the latter are formed of
harsh clay.
Dated this no
1005
BOULT & WADE,
Agents for the Applicant.
Improvements in or relating to Wire Cutting Apparatus for
Cutting Bricks or the like.
I THOMAS SMART, of Trent Bridge, in the City of Nottingham, Contractor, 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 apparatus for cutting bricks by means of wires and is
more particularly applicable to apparatus known as the "Murrey Type" in which
the cutting wires are stationary and the slab or clot of clay is moved up against them
by a sliding abutment.
The invention will be best understood by reference to the accompanying drawings
in which
Fig. I. is a rear elevation and
Fig. 2. a side elevation of wire cutting apparatus constructed according to my
invention.
Fig. 3. is a vertical cross section of the adjustable wire supporting frame.
Like letters indicate like parts throughout the drawings.
In carrying out my invention the wires A instead of being placed vertically as
heretofore, are placed at an angle say approximating to sixty degrees with the
table B of the apparatus, the upper ends of said wires being advanced to meet the
slab or clot of clay before their lower ends.
The wires A are carried by a frame which may be comprised of two side
members C, C, connected by an upper cross stay D, and a lower cross stay D¹. This
frame is provided near its lower corners with trunnions E which are mounted in
bearings in the main framing F of the apparatus at the points F¹, and said frame
may thus be adjustable angularly in order to adjust the angle of the wires A relatively
to the table B.
The wire frame is held in position by two links G, G, which are connected by
knuckle or pivotted joints G¹ to the upper part of the said frame, and to the main
framing F, by clamps G2 G2 in which said links are adjustable.
The wires A are stretched between the lower transverse stay D¹ and an adjustable
bar or bars H, the ends of which latter are secured to brackets H¹ carried in
guide-ways formed in the two side members C, C, of the wire frame.
Each bracket H¹ is adjusted in the guide-way in the corresponding side member C,
by a screw I mounted in a bearing in the upper part of the side member C the said
screw engaging with the bracket H¹. In order that both ends of the bar H may be
raised simultaneonsly, both the screws I, I, are connected by worm wheels J, J, on
their upper ends, to worms J1 J1, secured on a transverse shaft J2 which is carried in
bearings secured to or formed on the side members C, C, of the wire frame.
The lower ends of the wires A are connected to the cross stay D¹ in any convenient
manner, whilst their upper ends are preferably connected to the adjustable bar or
bars H by hooks A¹ provided with screwed shanks in the usual manner.
In order to provide additional support to the wires A, I employ two additional
transverse bars K, L, one of the said bars K being placed immediately below the level

page_text: of the table B and the other L just above the level of the upper face of the slab or
clot of clay.
These bars K, L, are placed at the front of the wires A and their edges are formed
with notches or recesses K' for the wires to lay in, and they thus not only form an
additional support for the wires, but hold them the exact distance apart.
The bar K may be secured to the cross stay D¹, and the ends of the bar L, (which
is preferably adjustable) are secured to slotted plates L' secured to the front of the
side members C, C, of the wire frame.
In cutting bricks with the wires arranged in the manner described, the slab or clot
of clay is moved up to the wires and the movement continued until the wires have
passed the greater part of the way through the slab, by means of the sliding carriage
or abutment.
The carriage is then withdrawn and a second slab or clot of clay placed on the
platform, this second slab is pushed up to the first, and the latter forced forward by it
till the wires have passed entirely through the first slab and through the greater part
of the second. This process is constantly repeated, each slab of clay being moved
forward by the following slab in order to complete the cutting process. This is
necessitated by the position of the wires which prevents the face of the carriage or
abutment being moved close up to them.
With the wires arranged in the manner described a cleaner cut is made and sharper
edges or angles are left on the bricks, more especially when the latter are formed of
harsh clay.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed I declare that what I
claim is
(1.) In wire cutting apparatus for cutting bricks or the like in which the cutting
wires are stationary the arrangement of the said cutting wires A at a less angle than
a right-angle relatively to the table B substantially as described.
(2.) In wire cutting apparatus for cutting bricks or the like in which the cutting
wires are stationary mounting said cutting wires A on a frame which is angularly
adjustable in order to permit of the angle of the cutting wires being adjusted
relatively to the table B substantially as described.
(3.) In wire cutting apparatus for cutting bricks or the like the combination with
the stationary cutting wires A of a frame such as C, C, D, D¹, which is mounted
on trunnions E in the framing F and is angularly adjustable substantially as
described.
(4.) In wire cutting apparatus for cutting bricks or the like the combination with
the cutting wires A of a supporting bar such as K or L provided with notches or
recesses to receive the wires A substantially as described.
(5.) In wire cutting apparatus for cutting bricks or the like the combination with
the cutting wires A of a framing such as C, C, D, D¹, a bar or bars H bracket H¹
mounted in guide-ways in the members C, C, of the wire frame screws I worm
wheels J worms J¹ and shaft J2 substantially as described.
(6.) The combination and arrangement of parts constituting the complete wire
cutting apparatus for cutting bricks or the like substantially as described and
illustrated in the accompanying drawings.
Dated this 21st day of October 1897.