Improvements in Sawing-machines.
Year: 1890

page_text: Date of Application, 14th Oct., 1890
-Complete Specification Left, 20th June, 1891-Accepted, 25th July, 1891
PROVISIONAL SPECIFICATION.
[Communicated from abroad by JEAN FRANÇOIS VAN SEVEREN, of Alost, in the
Kingdom of Belgium, Manufacturer.]
Improvements in Sawing-machines.
I, HENRY HARRIS LAKE, of the firm of Haseltine Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows :—
This invention relates to a sawing machine which is designed for cutting several
planks at the same time, and can be changed almost instantaneously for cutting
rough timber or beams of great sectional area.
:
In the improved machine devices are employed for guiding the planks at their
four surfaces at their lower surface by means of fluted rollers which effect the
feed of the planks across the saws by receiving a rotary movement from the shafts
upon which they are mounted; at their upper surface by pressing rollers mounted'
in stirrups having guides which extend through frames wherein helical springs act
upon a shoulder or projection on the said guides in order to force the rollers against
the plarks; and at their right hand and left hand surface by means of intercalated
pressing and guide rollers which constitute the principal feature of the said invention.
For cutting four or six planks the first and last planks are pressed against
intercalated guides by means of pressing rollers mounted between the branches of
stirrups. These stirrups terminate in a flat bar guided in collars or supports fixed
by screws to the frame of the machine. Against the extremity of the flat bar
pushes a curved lever which is mounted upon a rod set in rotation by the aid of
levers and weights which have for their object to hold the pressing rollers against
the outer planks.
When the machine is arranged for cutting four planks the second and third
planks are pressed against the above mentioned intercalated guides, and when it is
arranged for cutting six planks the second and fifth planks are forced against these
intercalated guides whilst the third and fourth planks are forced against. another
intercalated guide by means of two pressing rollers mounted in a double stirrup.
This double stirrup is provided on a rod terminating at its lower part in a pivot
which engages with a hole formed in the frame of the machine. The aforesaid rod
is prolonged to the upper part of the machine where a system of levers are provided.
From the extremity of the last of these levers is suspended a weight which has for
its object to turn the said rod and thus force the pressing rollers above mentioned
against the planks.
The intercalated guides can be displaced by a screw and slide by dove-tail mortise
upon a dove-tail tenon with which the support for the intercalated guides is
provided. The latter are fixed by means of the screws.
The support for the intercalated guides is held against the frame of the machine
by projections which engage with the hooks and by screws. Under these conditions
all the intercalated guides can be rapidly removed by turning their supports upon
the said hooks, and as moreover all the pressing rollers can without difficulty be
removed from the working space of the machine this space can in a moment receive
rough timber or beams of very great sectional area.
Bars of steel having plane surfaces are arranged to be displaced along the
surfaces of the intercalated guides and they can also be caused to recede from or
approach these surfaces.
In the left hand surface of the intercalated guide are formed two dove-tail
grooves with which engage two dove-tailed blocks. Into these blocks extend

page_text: screws which serve to fix the bars. By loosening the screws the said blocks are
caused to move in the grooves and they carry away the bars.
Two parallelopipedic grooves are provided in the right hand surface of the
intercalated guide. A bar enters each of these grooves and can pass more or less
into the same under the action of a screw carrying away the bars above referred to.
The outer part of this bar presents a dove-tail tenon, whilst the aforesaid bars are
provided with a dove-tail mortise to engage with the tenons, and their position is
rendered stationary through the medium of pressing screws.
Dated this 14th day of October 1890.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Sawing-machines.
I, HENRY HARRIS LAKE of the firm of Haseltine Lake & Co. Patent
Agents, 45 Southampton Buildings in the County of Middlesex, 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 a sawing machine which is designed for cutting several
planks at the same time, and which can be changed almost instantaneously for
cutting rough timber or beams of great sectional area.
In the accompanying drawings I have shown how my said invention can be
conveniently and advantageously carried into practice.
Figure 1 represents an end elevation of a machine for sawing four planks at the
same time.
Figure 2 represents a side elevation of the same machine.
Figure 3 an end elevation of a machine for sawing six planks at the same time.
Figure 4 shows a section of the machine for sawing four planks at once.
Figure 5 is a section of the machine for sawing six planks.
Figures 6, 7, 8, 9, 10 and 11 show in elevation, plan and section various details
of the machine.
In the improved machine the planks are guided at their lower surface by means
of fluted rollers a mounted on shafts c which eflect the feed of the said planks
across the saws c.
At their upper surface the planks are guided by pressing rollers & mounted in
stirrups having guides e which extend through frames wherein helical springs act
upon a shoulder or projection on the said guides e in order to force the rollers d
against the planks.
At the right and left hand surfaces the said planks are guided by means of
pressing and guide rollers which constitute the principal feature of the said
invention, and the form and operation of which are hereinafter described in detail.
In machines for cutting four or six planks the first and last planks are pressed
against the guides g by means of pressing rollers h mounted between the branches
of the stirrups i. These stirrups terminate in a flat bar guided in collars or supports
fixed by screws to the frame of the machine. Against the extremity of the flat bar
engages a curved lever which is mounted upon a rod operated by the aid of
levers and weights m which have for their object to hold the pressing rollers against
the outer planks.
When the machine is arranged for cutting four planks the second and third
planks are pressed against the above mentioned guides y, and when it is arranged
for cutting six planks the second and fifth planks are forced against these guides g,
whilst the third and fourth planks are forced against another guide g' by means of
the devices having two pressing rollers o which are shown separately to an
enlarged scale in Figure 6.

page_text: As shown these pressing rollers o are mounted in a double stirrup or fork p.
This double stirrup is provided on a rod 9 terminating at its lower part in a pivot r
which fits into a hole formed in the frame of the machine.
The rod g is prolonged to the upper part of the machine where a system of levers
is provided. From the extremity of the last of these levers is suspended a weight s
which has for its object to turn the said rod q and thus force the pressing rollers o
against the planks.
The guides 9 and 9' can be displaced by the endless screw t and slide by means of
dove-tail mortises upon a dove-tail tenon with which the support u for the guides
is provided. The latter are fixed by means of the screws v.
The support for the guides is held against the frame of the machine by
projections to which engage with the hooks x and by screws y. Under these
conditions all the guides can be rapidly removed by turning their supports upon
the said hooks, and as moreover all the pressing rollers can without difficulty be
removed from the working space of the machine this space can in a moment be
arranged for receiving rough timber or beams of very great sectional area.
Figures 8, 9, 10 and 11 show the arrangement of the frictional surfaces of the
above mentioned guides, Figure 8 representing part of the guide in side elevation.
Figure 9 part of the left-hand surface of this guide in front elevation; Figure 10
part of the right-hand surface in front elevation; and Figure 11 part of the above
mentioned guide in plan.
A and B designate bars of steel having plane surfaces; these bars are arranged
to be displaced along the surfaces of the said guides, and can also be caused to
recede from or approach these surfaces.
In the left hand surface of the guide are formed two dove-tail grooves with which
engage two dove-tailed blocks D. Into these blocks extend screws E which serve
to fix the bars B. By loosening the screws E the blocks D are caused to move in
the grooves C and they move the bars B.
Two parallelopipedic grooves C are provided in the right hand surface of the
guide. A bar F enters each of these grooves and can pass more or less into the
same under the action of the screw G, thus adjusting the bars A. The outer part
of this bar F presents a dove tail tenon H, whilst the bars A are
provided with a
dove tail mortise to engage with the tenons, and their position is rendered stationary
through the medium of pressing screws J.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed as communicated to me
by my foreign correspondent I declare that what I claim is :-
A sawing machine constructed for cutting a number of planks at the same time,
comprising the pressing rollers d with helical springs, pressing-rollers h, the
devices n having two pressing rollers, the guides 9 and movable upon screws and
provided with frictional surfaces formed of bars A and B which are adapted to
move along the surfaces of the said guides and recede from these surfaces, the
support for the guide with projections w hooks x and screws y, substantially as
herein before described and shown in the accompanying drawings.
Dated this 20th day of June 1891.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, Agents for the Applicant.