IMPROVEMENTS IN APPARATUS FOR FINISHING WOVEN FABRICS."
Year: 1881

page_text: LETTERS PATENT to Malcom McCallum, of Barrhead, in the County of Renfrew,
North Britain, Engineer, for an Invention of "IMPROVEMENTS IN APPARATUS
FOR FINISHING WOVEN FABRICS."
PROVISIONAL SPECIFICATION left by the said Malcom McCallum at the
Office of the Commissioners of Patents on the 2nd May 1881.
MALCOM MCCALLUM, of Barrhead, in the County of Renfrew, North Britain,
Engineer, "IMPROVEMENTS IN APPARATUS FOR FINISHING WOVEN FABRICS."
This Invention relates to various kinds of apparatus employed for what is known
as the "finishing" of woven fabrics, and has principally for its object to improve
the holding devices or clips which are used in such machines.
Each of the improved clips comprises a bottom plate, an upper movable piece or
jaw, and a crank lever for moving the jaw. When made for progressive finishing
inachines, in which the fabric is moved along whilst being stretched and dried, the
bottom plate of the clip is made with joint eyes or lugs and a number of the clips
are jointed or hinged together to form two endless chains which are moved along
by mechanism of the kind usually employed for that purpose. When the clip is
for a non-progressive finishing machine, the bottom plate is made so that it can be
conveniently screwed or fixed to the side bars of the machine, and the whole clip
may be conveniently made longer than the clip for the progressive machines,
eighteen inches being a suitable length for the holding parts in the non-progressive
machines, and six inches for the progressive machines, although these sizes may be
varied. The jaw piece is hinged to the bottom plate of the clip, so as in opening
to turn partly over to the outer side. The bottom holding surface is horizontal,
and formed on a narrow piece of plane-tree wood or other suitable material fixed
above the inner side of the bottom plate, and the upper holding surface consists of
an angular or narrow rounded edge formed on a strip of brass or other suitable
material fixed to the jaw piece. The jaw piece is opened and closed by means of a
crank lever centered on a vertical pin fixed in the bottom plate. In closing, the

page_text: underside of one arm of the crank lever bears on a curved incline formed on the
top of the jaw piece; and when closed, the parts are wedged and not liable to open
of themselves. To facilitate the adjustment of the crank lever it is held in place
by a nut and jam nut screwed on the pin, and a helical spring is placed on the pin
between the crank lever and the boss on the bottom plate to allow of the
adjustment and to render the crank lever steady. The jaw piece is opened by the
same arm of the crank lever which closes it, this arm when moved back
encountering a projection on the jaw piece and turning it over.
The other arm of
the crank lever serves as a handle in the case of non-progressive machines; and in
the case of progressive machines it is placed at a suitable angle for encountering
the stationary stops by which it is moved to close the clip, the opening being
effected by a pin or projection on, the other arm encountering other stationary
stops.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Malcom McCallum in the Great Seal Patent Office on the 29th October
1881.
MALCOM MCCALLUM, of Barrhead, in the County of Renfrew, North Britain,
Engineer. 'IMPROVEMENTS IN APPARATUS FOR FINISHING WOVEN FABRICS."
r
My said Invention relates to various kinds of apparatus employed for what is
known as the "finishing" of woven fabrics, and has principally for its object to
improve the holding devices or clips which are used in such machines.
Each of my improved clips comprises a bottom plate, an upper movable piece or
jaw, and a crank lever for moving the jaw. When made for progressive finishing
machines in which the fabric is moved along whilst being stretched and dried, the
clips are jointed together to form endless chains, but when the clips are made for
non-progressive finishing machines, the bottom plate of each clip is made so that it
can be conveniently screwed or fixed to the side bars of the machine, and the
whole clip may be conveniently made longer than the clip, for the progressive
machines, eighteen inches being a suitable length for the holding parts in the
non-progressive machines, and six inches for the progressive machines, although
these sizes may be varied.
And in order that my said Invention and the manner of performing the same
may be properly understood, I hereunto append a Sheet of explanatory Drawings,
to be hereinafter referred to, and representing my improved clip as made for
progressive finishing machines.
Figure 1, on the accompanying Sheet of Drawings, is a plan representing one
complete clip together with portions of the next clips jointed to each end of it.
Figures 2 and 3 are end and side elevations showing the holding jaw closed; and
Figure 4 is an elevation of the end opposite to that shown in Figure 2, and shows
the holding jaw open. In these Drawings the same referenco numerals are used
to mark the same or like parts wherever they are repeated.
The bottom plate 5 of each clip is made with a single joint eye or lug 6 at ono
end, and with a pair of joint eyes or lugs 7 at the other end, and the series of clips
are jointed together by joint pins fixed through the joint eyes in a well understood
manner to form two endless chains, which are moved along by mechanism of the
kind usually employed for that purpose. The jaw piece 8 of each clip is hinged to
the bottom plate 5 by means of lugs 9 and a pin 10, so as in opening to turn
partly over to the outer side, as shown in Figure 4. The bottom holding surface
is horizontal and formed on a narrow piece 11 of plane-tree wood or other suitable
material fixed by screws above the inner side of the bottom plate 5, and the upper
holding surface consists of an angular or narrow rounded edge, form on a
strip 12 of brass or other suitable material fixed to the jaw piece 8 by screws.
The movable jaw piece 8 is opened and closed by means of a crank lever 13, 14,
centered on a vertical pin 15 fixed in a boss 16, formed on the bottom plate 5. In
closing the underside of one arm 13 of the crank lever bears on a curved incline 17
formed on the top of the jaw piece 8, and when closed the parts are wedged and
not liable to open of themselves. To facilitate the adjustment of the crank
lever 13, 14, it is held in place on the pin 15 by a screw nut and jam nut 18, and
a helical spring 19 is placed on the pin between the crank lever and the boss 16 to
allow of the adjustment, and to render the crank lever steady. The movable jaw
piece 8 is opened by the same arm 13 of the crank lever which closes it, this arm
when moved back encountering a projection 20 formed on the jaw piece, and
turning it over. The other arm 14 of the crank lever serves as a handle in the
case of non-progressive machines, and in the case of progressive machines it is

page_text: placed at a suitable angle for encountering the stationary stops by which it is
moved to close the clip; the opening of the clip being effected by a pin or
projection 21 on the other arm 13 encountering other stationary stops.
Having thus particularly described my said Invention and the manner of
performing the same, I have to state that what I believe to be novel and original
and claim as the Invention secured to me by and in terms of the herein before in
part recited Letters Patent, is:-
1. The combination of parts forming an improved clip for apparatus for finishing
woven fabrics, as hereinbefore described.
2. The forming of the holding surfaces of the clip in the improved manner
hereinbefore described.
3. The combination of the helical spring (19) with the adjustable screw nuts (18)
for securing and steadying the crank lever (13, 14), as hereinbefore described.
In witness whereof, I, the said Malcom McCallum, have hereunto set my
hand and seal, this Twenty-eighth day of October, in the year of our Lord
One thousand eight hundred and eighty-one.
Witness,
EDMUND HUNT,
Patent Agent,
Glasgow.
MALCOM M'CALLUM. (L.S.)