Improvements in or connected with Apparatus for Grinding Revolving Flats of Carding Engines when in situ.
Year: 1890

page_text: Date of Application, 15th Mar.. 1890
Complete Specification Left, 13th Dec., 1890-Accepted, 28th Feb., 1891
PROVISIONAL SPECIFICATION.
Improvements in or connected with Apparatus for Grinding
Revolving Flats of Carding Engines when in situ.
We, SAMUEL HERBERT BROOKS, of West Gorton, Manchester, in the County
of Lancaster, Machinist, and JAMES EDGE, of Gorton, in the said County, Mill
Manager, do hereby declare the nature of this invention to be as follows :-
This invention relates to that class of carding engine in which revolving flats are
employed, and is designed with the object of grinding the wire of the Hats from
their working surface without removing same from their position on the carding-
engine.
The invention refers especially to such grinding mechanism as have the working
surface of the flat brought into contact with a horizontally moving bracket or slide,
which moves with it as it passes beneath the grinding roller, while the grinding roller
journals remain stationary.
It consists essentially of a slide or moving block with inclined slots-one at each
end-mounted upon studs in a fixed or stationary bracket, having a planed surface
against which the working surface of each flat successively bears, and a small
tumbler catch or pawl pivoted thereto which engages with the edge of the flats so
that the slide or block is carried forward therewith.
In carrying out the invention a double horned bracket, or bracket of other suit-
able shape, is bolted or affixed to any convenient fixing attached to the bend of the
carding engine, preferably upon the top of the ordinary carrier slide stand. A
slide or moving grinding block, capable of sliding to and fro a distance somewhat
in excess of the width of the flat, is connected to the fixed bracket by means of two
studs or pins which pass through slots at either end. The studs or pins are
preferably bolted to the fixed bracket and provided with cheese heads at their outer
ends, between which and the bracket, the grinding block slides. The slots in the
grinding block are sufficiently long to admit of the desired travel and are inclined
to a degree equivalent to or in proportion to the "heel" required upon the flats, so
that as the block moves forward it also has a slight upward movement. A planed
or other true surface is provided on the underside of the grinding block, against
which the working surface of each flat is successively brought to bear, and to the
side of the block is pivoted a tumbler catch against which the edge of the flat comes
in contact, carrying the block forward with it until the catch is raised and the flat
released after it is clear of the grinding roller. When the flat is released by the
withdrawing of the tumbler catch the grinding block falls back by its own gravity.
or is drawn back by a spring or weight to its first position to receive the next
approaching flat. The catch is thrown out of contact with the flat, by an inclined
tail or projection which passes under and against one of the supporting studs, or a
projection on the fixed bracket, but drops again into position as the block recedes
to the next flat.
The upper surface of the grinding block is curved or hollowed out to admit
of the movement of an intermittent grinding roller until the upper surface is
below the bend of the wire and is flanged downwards, or provided with a rib or
feather, to give the necessary strength.
The flats are raised into contact with or pressed against the under surface of the
sliding grinding block, by a pivoted counterweighted lever over which they pass.
This lever is provided with an adjustable stop to relieve the grinding block from
any unnecessary weight when changing.
The underside of the grinding block may be provided with a single inclined,
double inclined, curved or other suitable surface to give the required amount of

page_text: "heel" or inclination to the flat, while the grinding block moves in a plane tangential
to the grinding roller. Instead of slots sliding upon studs the grinding block may
be provided with swivel socket slides and plain ends.
To avoid or lessen the amount of friction, the studs may be provided with bowls
or other anti-friction device.
In operation, the flats will ascend after they have been stripped, along the top
of the ordinary horned bracket until they reach the end of the weighted lever, by
means of which they are successively lifted, and their working surface pressed
against the under surface of the grinding block. The tumbler catch engages with
the front edge of the flat, causing the two to travel forward together beneath the
grinding roller, and as they travel forward the inclined slots gradually raise the
grinding block so that the required heel or inclination is given to the surface of
the wire clothing of the flats. When the required distance has been travelled and
the flat is clear of the grinding roller, the tumbler catch is raised, releasing the
grinding block, while at the same time the flat drops off the end of the pivoted
lever.
Dated this 13th day of March 1800
WM. P. THOMPSON & Co.,
6, Bank Street, Manchester, Patent Agents.
COMPLETE SPECIFICATION.
Improvements in or connected with Apparatus for Grinding
Revolving Flats of Carding Engines when in situ.
We, SAMUEL HERBERT BROOKS, of West Gorton, Manchester, in the
County of Lancaster, Machinist, and JAMES EDGE, of Gorton, in the said
County, Mill Manager, 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 that class of carding-engine, for carding fibrous
materials preparatory to spinning, in which revolving Hats are employed and is
designed with the object of grinding the wire of the flats from their working
surfaces without removing them from their position on the carding-engine.
The invention refers more especially to such grinding mechanism as have the
working surface of the flats brought into contact with a horizontally moving
bracket or slide which moves with them as they successively pass beneath the
grinding roller while the grinding roller journals remain stationary.
It consists essentially of a sliding or moving block which moves along a slightly
inclined path, by reason of being fitted with inclined slots-one at each end-
mounted upon studs in a fixed or stationary bracket (or their equivalent) or which
carries the flat in an inclined position as it moves along a true or specially formed
surface against which the working surface of each flat successively bears and a
small tumbler catch or pawl pivoted thereto which engages with the front edge of
each flat and causes the slide or block to be carried forward therewith.
It will be fully described with reference to the annexed drawings wherein
sufficient of a carding-engine is illustrated to show the working of the invention.
Fig. 1, is a side elevation of part of the bend of a carding-engine and grinding
bracket and roller with our invention in position affixed thereto.
Fig. 2, front elevation of same with the bend in section.
Fig. 3, side elevation of the invention showing modified form of the sliding and
_stationary brackets.
Fig. 4, plan of Fig. 3.
Figs. 5, 6, 7, side elevations of modified forms of sliding bracket.
Fig. 8, side elevation of pivoted lever which raises and holds the flats against the
cliding hakat

page_text: Fig. 10, side elevation of modified form of pivoted lever.
Fig. 11, plan of pivoted lever as shown in Fig. 10.
Fig. 12, enlarged elevation of stud for the sliding bracket.
The invention will be described with reference to one side only of the carding-
engine and to a single flat it must however be understood that a similar appliance
is attached to the other side of the carding-engine the two acting in unison and
that the operation of grinding each flat in succession as they travel forward is the
same.
The flats A, the bend B, the flexible bend or disc B¹, the grinding roller C, the
grinding bracket D, the horned bracket E, over which the flats travel and the
pivoted and weighted lever F, which successively lifts up each flat while being
ground may be of any ordinary or general construction.
To the grinding bracket D or to any other suitable fixing is bolted or otherwise
affixed a stationary bracket G preferably of the shape shown with two projecting
horns g. A slide or moving grinding block or bracket H is mounted to slide to and
fro on the horns g of the stationary bracket G preferably in a path slightly inclined
to the horizontal the distance of travel to and fro being somewhat in excess of the
width of a flat.
The slides H may be provided with slots at either end and be carried on studs I
screwed to the bracket G as shown in Figs. 1-2 and 5-6-7 or the ends of the
slide H may be supported in slots formed in the ends g of the stationary bracket G
as shown in Figs. 3, 4.
We prefer the arrangement whereby the slide H is connected to the fixed
bracket G by the two studs or pins I with anti-friction runners or bowls i which
pass through the slots at either end. The studs or pins I are screwed into the
ends of the stationary bracket G. They are of the form shown in detail in
Fig. 12 with cheese-heads between which and the stationary bracket the grinding
block H slides. The slots in either end of the grinding block H. are sufficiently
long to admit of the desired length of travel and are inclined to a degree equivalent
to or in proportion to the amount of "heel" required upon the flats, so that as the
block moves forward it has a slightly inclined upward movement. A planed or.
other true surface is provided at on the underside of the grinding block H
against which the working surface a of the flat A is brought to bear as it is raised
by the pivoted lever F. On one side of the grinding block H is pivoted a tumbler
or catch .J against the end of which the edge of the flat comes in contact as it
'moves forward. When the flat has been lifted up against the grinding block H
and it has advanced until the side comes in contact with the tumbler J the two
then move forward together under the grinding roller C. The other end of the
j
tumbler J projects beneath the fixed stud I and being provided with an inclined
surface when the grinding block has moved a given distance the end j is depressed
and the tumbler released from or moved out of contact with the flat A. When
the flat A is released by the withdrawing of the tumbler J and has been withdrawn
from contact with the grinding block H, the block H falls back to its first position
to receive the next approaching flat by its own gravity or is drawn back by a spring
or weight.
The upper surface of the grinding block H is as shown curved to admit of the
movement of an intermittent grinding roller when such is used until the surface is
below the level of the bend or knee in the wire on the flat and the block His
further provided with a flange or feather extending downwards to give it the
necessary strength.
In the modification shown in Figs. 3, 4, the grinding block H is provided with
solid ends which slide to and fro in the pivoted or swivel sockets I¹ which are
slotted as shown to receive the ends in this case the ends of the block H are
inclined to give the required inclination of movement to the grinding block H.
In the modifications shown in Figs. 5-6-7 instead of an inclined movement
being given to the whole grinding block H it is caused to move in a plane tangential
to the grinding roller C and on the under-side the surface at h" against which the

page_text: working surface a of the flat A bears is formed of a single incline (as shown in
Fig. 5) a double incline (as shown in Fig. 6) a curve or other suitable contour (as
shown in Fig. 7) to give the required amount of "heel or inclination to the wires
of the flat as they pass beneath and are ground by the grinding roller C.
The pivoted lever F which raises and holds the flat up against the grinding
block H while being ground is pivoted on a stud or short spindle f passing through
a sleeve or bracket attached to or forming part of the horned bracket E over
which the flats slide. On its upper side is formed a face upon which the flat
rests and swivels when lifted up off the bracket E. The lever F may be either of
the form shown in Figs. 8 and 9 or in Figs. 10 and 11. It is provided with an
adjustable stop K to relieve the grinding block H from any unnecessary weight and
has also attached to it a finger or lug L with which the back of the flats come in
contact one by one as they travel to lift the weighted end of the lever and depress
the face fas each successive flat is about to mount upon it.
In operation the flats will after being stripped ascend along the curved top of
the ordinary horned bracket E until they reach the end of the pivoted weighted
lever by which they are successively lifted and the working surface a pressed
against the prepared surface or of the sliding grinding block H. The
tumbler engages with the front edge of the flat causing the two to travel forward
together beneath the grinding roller C and as they travel forward the inclination
of the slots or ends of the grinding block H gradually raises it so that it travels in
a path inclined to the radius of the grinding roller C and thereby the grinding is
carried out to give the required "heel" or inclination to the wire clothing of the
Hat. Or as in the modification shown in Figs. 5-6-7, the flat itself is inclined by
bearing against a surface " of proper contour on the underside of the sliding
grinding block H. When the required distance has been travelled and the flat is
clear of the grinding roller and the grinding completed the tumbler J is raised
releasing the Hat from contact with the grinding block H while at the same time it
drops off the surface f' of the pivoted lever F.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. An apparatus for grinding the revolving flats of carding-engines when in situ
having a sliding grinding block or bracket against which the working surface of
the flat rests and which on studs or slides moves along and carries the flat along a
path inclined to the radius of the grinding roller substantially as described.
2. In apparatus for grinding the revolving flats of carding-engines when in situ
a sliding grinding block or bracket against which the working surface of the flat
rests having inclined slots or inclined ends which as it moves forward give the
required inclination to the flat substantially as described.
3. In an apparatus for grinding the revolving flats of carding-engines when in situ
the combination with a grinding roller C, grinding bracket D, horned bracket E,
and pivoted lever Feach of ordinary construction of the fixed and stationary
bracket G and the sliding grinding block or bracket H constructed and arranged
substantially as described and shown.
Dated this 10th ..
1.800
WM. P. THOMPSON & Co.,
Manchester, Liverpool, and London, Patent Agents.