IMPROVEMENTS IN APPARATUS FOR TESTING OARD FLATS to be as follows:
Year: 1886

page_text: Date of Application, 22nd Jan., 1886.
Complete Left, 20th Oct., 1886.
Complete Accepted. 7th Jan., 1887,
I EDMUND TWEEDALE, of Globe Works, Accrington, in the County of Lancaster,
Manager, do hereby declare the nature of my said invention for "IMPROVEMENTS IN
APPARATUS FOR TESTING OARD FLATS to be as follows:-
"
"
"
The importance of true relative adjustment, and position of the "card flats" to the
card cylinder, is well known-and the nearer they approach to standard of absolute
accuracy, the better will be the results attained.
For purpose of "testing" and detecting any inequality in the flats before the card
clothing is applied thereto, and for detecting any inequality in the surface or points of
the card teeth, after the latter have been ground, I employ apparatus as follows:-
Upon a gantry or platform of metal, and having a true and even surface, are
mounted a pair of standards, at distances apart, so as to receive the ends of the flat to
be tested.
Each standard has two resting surfaces for the ends of flat, one of such surfaces
being the exact counterpart of the "bends" on which the flats are received when in
position in the carding engine-the other surfaces are the equivalents of the "grinding
brackets" whilst the cards thereon are being "ground."
Upon the gantry or platform is a metal block, its contact surface is true, with, or to
the gantry or platform, and on which it may be freely moved about, in any direction-
The block carries by a curved supporting arm a minocular screw, and dial, by which
the end of the said screw (which is in vertical position) can be set to the 1000 part of
an inch, or to further subdivision of an inch.
The flat to be tested, is placed upon the "bend" surfaces of the standards, and the
end of the screw set so as to just clear, a part of the flat. The block is now freely
moved about so as to bring the end of the screw about and over the whole surface of
the flat, inequalities being detected, by contact and absence of contact-between screw
and flat, at various parts of the surface of the latter-The flat after being so tested
will be rejected or corrected if untrue-I will now describe the "testing" a card flat,
after grinding.
"
"
The flat will be placed cards downwards upon the grinding bracket surfaces of the
standards, and the head of a minocular screw, carried by movable block, will be set to

page_text: and freely moved under and about the ends of the card teeth, actual contact therewith
being indicated with some degree of nicety by sense of touch or by sight.
For the purpose of ensuring a record or indication of contact between screw and the
flats or of the cards thereon, to a degree approaching absolute exactitude, I connect
the surface of the gantry, with one pole of a battery or magnetic current-The sliding
testing block, I insulate from the platform, and connect the opposite pole wire, to the
upper part of the block, so that on contact between the end or head of the screw, with
the flat, or the cards thereon, the circuit is completed, whereon the finger of a galvano-
meter, an electric bell, a microphone, a telephone, indicates contact between test screw
and flat or cards thereon, thus affording a much more delicate task than touch or
sight.
WALTER BRIERLEY,
Town Hall Buildings, Halifax,
Agent for the Applicant.

page_text: Improvements in Apparatus for "Testing" Card Flats.
°
66
99
I, EDMUND TWEEDALE of Globe Works, Accrington in the County of Lancaster,
Manager do hereby declare the nature of my invention for "IMPROVEMENTS IN
CARD FLATS" and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:
APPARATUS FOR
TESTING
The importance of true relative adjustment and position of the "card flats" to the
card cylinders is well known and the nearer they approach to standard of absolute
accuracy, the better will be the results obtained.
For purpose of "testing" and detecting any inequality in the flats before the card
clothing is applied thereto, and for detecting any inequality in the surface or points of
the card teeth after the latter have been ground I employ apparatus as follows.
Upon a gantry or platform of metal and having a true and even surface are mounted
a pair of standards at distances apart, so as to receive the ends of the flat to be tested.
Each standard has two resting surfaces for the ends of flat surfaces being the exact
on which the flats are received when in working position
counterpart of the "bends"
on the carding engine the other surfaces are the equivalents of the "grinding brackets"
whilst the cards thereon are being "ground."
Upon the gantry or platform is a metal block its contact surface is true with or to
any direction.
the gantry or platform and on which it may be freely moved about in
The block carries by a supporting arm a minocular screw and dial by which the end
of the said screw (which is in vertical position) can be set to the 1000 part of an inch,
or to further subdivision of an inch.
The flat to be tested is placed upon the grinding bracket surfaces of the standards
and the end of the screw set so as to just clear a part of the flat.
The block is now freely moved about so as to bring the end of the screw about and
over the whole surface of the flat, inequalities being detected by contact and absence
of contact between screw and flat at various parts of the surface of the latter.
The flat after being so "tested" will if untrue be corrected or rejected.
I will now describe the "testing" a card flat after grinding.
The flat will be placed cards downwards upon the working bracket surfaces of the
standards and the head or end of a minocular screw carried by movable block will be
set to and freely moved under and about the ends of the card teeth, actual contact
therewith being indicated with some degree of nicety by sense of touch or by sight.
For the purpose of ensuring a record or indication of contact between screw and the
flats or of the cards thereon to a degree approaching absolute exactitude I connect the
surface of the gantry with one pole of a battery or magnetic current. The sliding
testing blocks insulate from the platform, and connect the opposite pole wire to the
upper part of the block, so that on contact between the end or head of the screw with
the flat or the cards thereon the circuit is completed, whereon the finger of a galvano-
meter, an electric bell, a microphone or telephone indicates contact between test screw
and flat or cards thereon thus affording a much more delicate test than touch or sight.

page_text: Such being the nature and object or my said invention, the following is a completo
description of same reference being had to the accompanying drawings forming a
part of this specification
Fig. 1 illustrates the improved apparatus front elevation wherein the sliding or
movable blocks (carrying the micrometer screws) are insulated from the gantry.
Fig. 2 is a like view of the apparatus wherein the brackets carrying the flats are
insulated from the gantry.
Figs. 3 and 4 are end views partly in section shewing supporting surfaces on which
the flats are to be carried when under testing.
Upon a gantry or platform 1 of metal and having a true and even surface are
mounted a pair of standards 2, 2, at distances apart, so as to receive the ends of the flat
to be tested.
Each standard has two resting surfaces 3, 3, 4, 4, for the ends of flat 5, the surfaces
3, 3, being the exact counterpart of the bends on which the flats 5 are received when
in working position on the carding engine, the other surfaces 4, 4 are the equivalents
of the "grinding brackets" whilst the cards of the flats thereon are being "ground."
Upon the gantry or platform 1 are metal blocks 6, 6× their contact surfaces are
true with or to the gantry or platform and on which they may be freely moved about
any direction. The block 6x carries by a supporting arm a minocular screw 7 and
dial 8 by which the end of the said screws which are in vertical position can be set to
the 1000 part of an inch or to further subdivision of an incl.
in
The flat 5 to be tested is placed upon the grinding surfaces 4. 4 of the standards
2, 2, and the lower end by the dial 8 of the screw 7 is set so as to just clear a part of
the flat.
The block 6x is now freely moved about upon the gantry I so as to bring the end
of the screw 7 about and over the whole surface of the flat inequalities being detected
by contact and absence of contact between the screw and flat at various parts of the
surface of the latter.
The flat after being so tested will if untrue be corrected at the points 4 to a pre-
determined standard on the dial micrometer screw.
I will now describe the testing a card flat after clothing and grinding.
The flat 5 will be placed cards downwards as shewn at right hand side of Figs.
and Fig. 2 upon the working bracket surfaces 3. 3 of the standards 2, and the end of
the minocular screw 7 carried by movable block 6 will be set to and freely moved
under and about the ends of the card teeth, actual contact therewith being indicated
with some degree of nicety by sense of touch or by sight. If untrue will be cor-
rected at 4³.
For the purpose of ensuring a record or indication of contact between screw and the
flats or of the cards thereon to a degree approaching absolute exactitude I connect
by wire 11 the surface of the gantry 1 with one pole of a battery or magnetic current.
The sliding testing blocks 6X, 6, I insulate at 12 from the platform and connect the
opposite pole wire 13 to the upper part of the test block, so that on contact between
the end or head of the screw with the flat or the cards thereon the circuit is completed
whereon the finger of a galvanometer, an electric bell, a microphone, or a telephone
indicates contact between test screw and flat or cards thereon thus affording a much
more delicate test than touch or sight.
Or I insulate the bearings as at Fig. 2, thus dispening with the wire to the movable
blocks in lieu of which the wire is connected to the fixed brackets being more con-
venient than when the wire is attached to the movable blocks.
Although I have described and illustrated the use of two movable blocks and two
resting surfaces 3. 3,-4. 4 for the flat, it will be understood that one movable block
such as 6X and duplicate bearing 3. 3, for the ends of the flat may be used for testing,
first the surfaces 5x of the flat and afterwards when the cards are applied to the flat by
turning and raising the end of the screw 7 the wire or cards may then be tested by
the same block 6x and screw 7, but I prefer to use the two movable blocks, and the
two duplicate bearing surfaces 3, 3, 4, 4, as giving a nearer approach to exactitude.

page_text: Having now particularly described and ascertained the nature of my said Invention,
and in what manner the same is to be performed I declare that what I claim is ;
Firstly. The movable block 6x having micrometer screw in combination with the
duplicate bearing surface 4. 4 for testing card flats as herein fully described.
Secondly. The movable blocks 6x and 6 having micrometer screws in combination
with the duplicate bearing surfaces 3, 3, 4, 4, for testing card flats as herein fully
described and illustrated.
Thirdly. The movable metal block or blocks having the micrometer screws insulated
from the gantry and combined with the brackets and surfaces for supporting the flats
as and for the purpose herein fully described and substantially as illustrated by the
annexed drawings.
Fourthly. The movable metal blocks having the micrometer screws combined with
the brackets insulated and surfaces carrying the flats for purpose and as herein fully
described and illustrated by the annexed drawings.
EDMUND TWEEDALE.
By his Agent,
Walter Brierley,
Town Hall Buildings, Halifax.