Improvements in Rotary Wire Gigging Machines.
Year: 1887

page_text: Date of Application, 7th Mar., 1887.
Specification Accepted. 7th Apr., 1887.
Improvements in Rotary Wire Gigging Machines.
I, ALFRED JULIUS BOULT of 323 High Holborn in the county of Middlesex,
M.I.M.E. 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 :-
The invention relates to that class of gigs used for raising the nap upon cloth.
The objects of this invention are, to firmly secure the small mapping cylinders to
the main or driving shaft and with the least possible gearing, give to the said
cylinders an independent reverse, revolving movement, that will be accompanied by
the least possible friction, thus lessening the wear and tear, and in a measure,
overcoming the liability of breakage.
This invention consists of a series of small nap-forming cylinders, having an
independent movement and attached to and receiving their motive power from a
central driving shaft, around which they revolve.
Referring to the drawings of which
Figure 1 is a side elevation of this machine.
Figure 2 is an end elevation of the same.
Fig. is a cross section on line ca figure 1.
A A¹ are the two end frames of the machine, held at a certain distance apart by
stay rods aa, and constructed of iron and made after any suitable or desired pattern.
B is the main or driving shaft secured in suitable bearings aa' in the frames A A'
of the machine and extending across the same. On to this shaft. Bat, are secured
rigidly the trifurcated frames CC-D D D are spindles, having bearings in the
arms cee of the frames C. These spindles carry the small napping cylinders EEE,
which are provided with projections or lugs eeee, on the outer surface, for the
purpose of attaching or securing the card-wire, ele similar to that used on carding
machines. The spindles D, D, D, D, are provided with cog-wheels F, F, F, which

page_text: mesh or gear into, and derive their motion from a series of cogs, formed or
fastened in a circle on the inner sides of the frames A A.
99 are supporis, extending across the machine outside the cylinders E E, for the
purpose of holding the cloth in position-to be acted upon by the card wires e e on
the said cylinders.
G represents the cloth upon which the nap is to be raised.
jjare semi-circular grooves formed between the projections ee of the trifurcated
frames CC, for the purpose of allowing the supporting rods to enter, as the
cylinders revolves. This permits the brushes e¹e to touch the cloth between each
supports.
The machine is constructed with the usual friction, draw and other rollers to
facilitate the movement of the cloth, and as they do not form a part of this invention,
a lengthy description will not be entered into about them.
To operate this machine, the cloth is first extended over the top of the same in
the position shown in fig. 3-movement is then given to the cloth by any suitable
mechanism, in the direction of the arrow-Motion is then imparted to the main
driving shaft in the direction of arrow, carrying with it the trifurcated frames CC
in the same direction.
As these frames CO move around, the teeth of the cog-wheels FF come in contact
with the teeth on the frames A A and give the mapping cylinders, E, E, a contrary
revolving motion. This causes the wire brushes ee to strike the cloth at intervals
between the supports gg of the frame.
The cloth is made to move forward somewhai faster than the speed of the napping
cylinders E, E. This is done for the purpose of allowing the hooked shaped carding
wire to take a firm hold of the fibres of the fabric upon which the nap is to be raised.
The peculiar movement by which the wire brushes is made to strike the cloth and
recede therefrom at regular intervals has the effect of forming the nap in a way that
will do the least possible injury to the fabric.
Having now particularly described and ascertained the nature of said invention as
communicated to me by my foreign Correspondent and in what manner the same is to
be performed, I declare that what I claim is :-
:-
In a gig the combination with the main driving the frames A A having
longitudinal supports, and a circular rim of inwardly projecting teeth 1, of
the trifurcated frames secured to the main shaft the longitudinal grooved
cylinders EE, with brushes e el having hearings in the arms of said frames CC,
and also gear-wheels on the end of said cylinders engaging with the inwardly
extending cogs of the rim, substantially as and for the purpose set forth.
Dated this 7th day of March 1887.