Improvements in Crimping, Bending, or Shaping and Holding Wire or other Forms of Metal, and in the Means or Apparatus Employed therein.
Year: 1893

page_text: Date of Application, 14th Nov., 1893
Complete Specification Left, 14th Sept., 1894-Accepted, 3rd Nov., 1894
PROVISIONAL SPECIFICATION.
Improvements in Crimping, Bending, or Shaping and Holding Wire
or other Forms of Metal, and in the Means or Apparatus
Employed therein.
We ROOKES EVELYN BELL CROMPTON, Engineer, and HERBERT JOHN
DOWSING, Engineer, both of Mansion House Buildings, in the City of London, do
hereby declare the nature of this invention to be as follows:-
The invention has for its object to effect the crimping, or bending or shaping of
wire, tape, band or sheet metal into any desired form and in some cases to aid in
the holding or fixing of the same in the shape produced upon a holder or fixing
surface.
The invention consists essentially in the improved method of effecting the
crimping or like shaping and, if desired, the transference of the correctly crimped,
or shaped material to other means than the crimping means whereby the shaped
wire, or material is held in its correct form and further shaped and held in that
shape and then fixed in such shape by the application of suitable permanent
holding means, such for instance as an enamel in successive layers rendered viscid
by heat.
The temporary holding means and the support to which it is permanently affixed
may be one and the same or they may be separate and distinct the shaped article
being transferred from one to the other either mechanically by withdrawal of pins
or other parts or by the releasing of adhesive means by means of heat or in
equivalent manner effecting the transfer without allowing the shape to be
modified.
The apparatus we employ consists essentially of a reel or other suitable means of
holding and supply of the wire, ribbon, tape, band or sheet of metal controlled as
may be required by suitable regulating or frictional delivery controlling means and
the wire or other form of metal to be acted upon is conveyed through a suitable
guide or guides and spring or other frictional holding and regulating means to a
rotary or other series of indented surfaces and the free end of the metal being laid
across two indentations a dog or holder tooth or holder piece comes forward and by
engaging the free end (and successively each succeeding formed crimp) holds it
from receding whilst onto the wire or metal across the next opening between two
teeth comes forward a tooth or forming piece conforming substantially to the shape
of one side of, or half a tooth of the indented travelling surface, the fitting
however of the two meeting surfaces being such as to allow clearance for the wire
or metal (which must not be indented, crushed or injured for certain purposes).
This corrugated or like formed wire or metal is delivered from this indented
travelling surface and by means of guides is passed to and upon suitable holding
means, which again if required are brought into intimate contact with suitable
adhesive surfaces which impound it permanently under pressure.
As a simple illustration of an application of the invention we will suppose that
it is desired to produce a helical corrugated length of wire cemented to a plate of
metal by means of successive layers of enamel in a state of adhesiveness induced
by heat.
We provide a reel or supply of wire which through guides and frictional
devices passes to and partly around a toothed surface into the indentations of which
the wire is to be forced and the contour of which teeth it will take.
A dog, or holder, comes forward and locks the wire. This dog may be a tooth
approximately fitting the interspace between two teeth and this tooth may be

page_text: mounted on a rod, carried in bearings mounted on the bed plate and driven to and
fro by means of an arm, or connection deriving motion from a cam, eccentric or
equivalent surface or a crank or disc mounted on an axis driven by a hand wheel,
or fast and loose pullies by means of a band from suitable power, or equivalent
means of rotation; and following upon this holding action of the dog in the next
preceding interspace comes forward another tooth, or shaped piece which taking
forward the wire into the indentation bends it and without distorting its sectional
area presses it into the desired crimp or form. This tooth may not only press the
wire into the curve at the base of the indentation but also cap the outer bend
around the peripheral surface of the tooth.
This shaping tooth may be mounted on a rod capable of reciprocation in bearings
and be driven by a rod from a crank, or eccentric on the driving shaft referred to.
The indented wheel, or equivalent surface is driven forward by a step by step
motion such as a ratchet wheel on the base of the axis of this wheel and a ratchet
actuated by connections from a part moved by a cam or pattern surface operated
by the main axis referred to.
The indented surface in a simple form may for finer wire consist of teeth between
two discs or plain surfaces the dog and shaping tooth reciprocating between the
two dises. Springs or weights may be used to aid in the movements of the parts.
The receiving disc or holder may be a series of pins or equivalent holdings duly
spaced upon which the indented wire is delivered and pressed and held and from
this holding surface it may be transferred to other adhesive and permanently
locking means by pressure.
The delivery of the crimped wire may for such a purpose as above mentioned,
be effected in the following or equivalent manner.
A reciprocating hook, jigger or releaser may be mounted in such a manner that
its motion may correspond with that of the crimped wire so that the hook or other
part may engage with, seize and withdraw or otherwise release the crimped wire
from the indentations in the crimping device, and thus ensure that it leaves or
frees itself from these indentations at any desired point.
If it be desired to coil the crimped wire into the form of a flat helix-attached
or not as may be required to a prepared surface, this surface may be mounted and
arranged so that may be revolved at a speed regulated in relation to that of the
delivery of the wire by suitable gearing, change wheels or equivalent devices.
A cross traverse may be given to this revolving surface the relative speed of the
cross traverse can also be determined by similar gear and change wheels etcetera.
The crimped wire may be fed on to and flattened upon or to the required
surface by rollers covered with an elastic material although plain rollers may also
be used.
In some instances a roller or presser of conical form may be employed to assist
in imbedding or fixing the wire or shaped metal on to the surface to receive it and
to rotate or aid in rotating the plate or receiving surface and this may be by
contact of its own weight.
Dated the 14th day of Novambon 1902
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.
OMI LEID DI MULTIUATION
Improvements in Crimping, Bending, or Shaping and Holding Wire
or other Forms of Metal, and in the Means or Apparatus
Employed therein.
We ROOKES EVELYN BELL CROMPTON, Engineer, and HERBERT JOHN
DOWSING Engineer, both of Mansion House Buildings in the City of London do
hereby declare the nature of this invention and in what manner the same is to be

page_text: performed, to be particularly described and ascertained in and by the following
statement :-
The invention has for its object to effect the crimping or bending or shaping of
wire, tape, band or sheet metal into any desired form and in some cases to aid in
the holding or fixing of the same in the shape produced upon a holder or fixing
surface.
The invention consists essentially in the improved method of effecting the
crimping or like shaping and if desired, the transference of the correctly crimped,
or shaped material to other means, than the crimping means whereby the shaped
wire, or material is held in its correct forin and further shaped and held in that
shape and then fixed in such shape by the application of suitable permanent
holding means such for instance as an enamel in successive layers rendered viscid
by heat.
The temporary holding means and the support to which it is permanently affixed
may be one and the same or they may be separate and distinct the shaped article
being transferred from one to the other either mechanically by withdrawal of pins
or other parts or by the releasing of adhesive means by means of heat or in
equivalent manner effecting the transfer without allowing the shape to be
modified.
The apparatus we employ consists essentially of a reel or other suitable means
of hold and supply of the wire, ribbon, tape, band or sheet of metal controlled as
may be required by suitable regulating or frictional delivery controlling means and
the wire or other form of metal to be acted upon is conveyed through a suitable
guide or guides and spring or other frictional holding and regulating means to a
rotary or other series of indented surfaces and the free end of the metal being laid
across two indentations a dog or holder tooth or holder piece comes forward and
by engaging the free end (and successively each succeeding formed crimp) holds it
from receding whilst onto the wire or metal across the next opening between two
teeth comes forward a tooth or forming piece conforming substantially to the shape
of one side of, or half a tooth of the indented travelling surface, the fitting however
of the two meeting surfaces being such as to allow clearance for the wire or metal
(which must not be indented, crushed or injured for certain purposes). This
corrugated or like formed wire or metal is delivered from this indented travelling
surface and by means of guides is passed to and upon suitable holding means, which
again if required are brought into intimate contact with suitable adhesive surfaces
which impound it permanently under pressure.
In some instances a roller or presser of conical form may be employed to assist
in embedding or fixing the wire or shaped metal on to the surface to receive it and
to rotate or aid in rotating the plate or receiving surface and this may be by contact
of its own weight.
The surface applied on the upper face of the table hereinafter referred to as m
may be of the character of the means for temporarily retaining resistances in the
manufacture of enamel plates or surfaces carrying wires to be insulated by said
enamel, described and claimed in the Specification of Patent No. 257 dated
January 5th 1893 granted to us, or the surface may be of other temporary
character as glued sheets of card, or it may be a surface adapted permanently
to form the adherent and insulating film rendered adhesive by heat.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a vertical section taken on the line 1-1 of Fig. 2.
Fig. 2 is a plan view of the machine with the table in and reel removed for
convenience of the drawing. The dotted lines indicate however the position of the
table. Portions of the framing and part of shaft have been broken away for the
same reason.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 is a vertical section taken on the line 1-1 of Fig. 2.
Fig. 2 is a plan view of the machine with the table in and reel removed for
convenience of the drawing. The dotted lines indicate however the position of the
table.
Portions of the framing and part of shaft have been broken away for the
same reason.
Fig. 3 is a detail view of the eccentric for operating the ratchet wheel lº which
engages the gear giving rotation to the table.

page_text: Fig. 4 is an underside view of the table reduced somewhat in scale.
Fig. 5 is a sectional detail side view of parts of the mechanism by which motion
tooth by tooth is imparted to the indented wheel d.
Fig. 6 is a vertical sectional detail view of the base plate, and indented wheel
centred thereon with the connections to the counting mechanism.
a is the main shaft, mounted in bearings carried by the base plate & which is
supported on the framing b. b is a bracket carrying the support &* for the
table m.
On the shaft a is mounted a cam a¹ which operates the bent arm c which slides
to and fro in the bearings, &, in the base plate flange, and underside of same.
5
This arm is curved downwards, as shewn, and linked to a centred arm c¹ centred
at to bracket c³, shewn in dotted lines Fig. 5 to the underside of the base plate.
The arm c¹ has centred to its upper end the tooth or pawl e, the outer end of
which is borne upon by the spring attached to it and to the lever c'. The
spring bears upon the arm c with a constant tendency to press the pulley end 1
thereof to the cam a'. The pointed end of the tooth c engages successively the
teeth of the wheel d which coöperates with a reciprocating forming tooth to be
described, to indent the wire. The cam a* on the shaft a engages the pulley end
of a bent' arm e which reciprocates in bearings the base plate beneath and passes
up 'through a slot 6 and is bent rearwards and linked to a lever el centred on 2
the base plate at whilst its further end is engaged between two friction
pulleys on pins projecting downwards from the reciprocating bar & sliding in
bearings ee on the base plate.
A spring e below keeps the pulley end of this bar e to its cam a³.
On the inner end of the bar et is removably affixed by set screw, a holding dog
or tooth e', which tooth is interchangeable with other like teeth of different sizes
according to the diameter of the wheel d for the time in use and the size of
indentation required. a' is a crank giving motion to the rod f1 connecting the
crank to the reciprocating rod f sliding in the bearings f* mounted on the base
plate.
The inner end of rod f carries the tooth or forming piece f³, interchangeably
affixed by set screw f^, so that sizes of teeth may be varied to sizes of wheel d.
g is a reel on which is wound the wire g¹ to be crimped. This reel is carried by
its spindle being borne in bearings in a bracket or bent arm g³ affixed to the base
plate. The wire passes from the reel through a slit h' in a bent plate h affixed to the
base plate, this plate has arms h² which form bearings for the spindle of a wheel /
grooved to receive the wire and guide it to and between two friction wheels /*
and each covered on their grooved circumferences with india rubber or like
elastic material. The wheel is mounted on an adjustable, arm he slotted at h' and
through said slot passes a screwed milled headed set stud which engages a
thread in the base plate, and 1° serves as a centre pin for said arm h³.
The wheel A serves as a feed wheel to supply wire step by step and h¹º is a
spring guide to take up any slack in the wire between said feed wheel and the
crimping wheel d.
The wheel his rotated in the direction of the arrow (2) by means of a pin
projecting from the forming tooth and engaging the horns of a slot in the
plate which swings on a pin 4, as a centre of motion, carried in the bracket h¹
which keeps the centre pin of the feed wheel in place. The pin " also carries
upon its upper end a ratchet wheel h engaged and operated by the pawl 16 carried
on a pin fixed on the plate h; a spring keeps it to its work, as the plate h¹ is
oscillated by the dog f. On the pin " below the bracket h" is a gear wheel ¹³
which engages a gear wheel mounted on the axis of the wheel h³ so as to
operate it.
:
•
The wheel d is mounted on an axis d' supported in the base plate. This wheel d
is kept pressed to its seat on base plate by a milled headed screw nut a mounted on
a screwed extension of the axis d' with an interposed frictional and adjustable
spring d. This extension of the axis is shewn provided with a second lock nut

page_text: with milled edge d' and between them is locked a pointer arm & which is used to
indicate the number of corrugations of wire effected as denoted by the rotation of
the dial i.
This counting mechanism is removable when not required.
The tooth wheel formed by the edge of the dial is engaged by a small
pinion secured to rotate with the larger pinion and this latter is engaged by
the circle of teeth de formed in wheel or disc clamped to the wheel d and pressed
by the washer d' pressed upon it by the spring d³. The wheels i, ', ' are mounted
on pins carried by a plate carried at one end on an axis i adjustably fixed in
a bearing formed in the base plate and locked therein by a milled headed
screw i³.
After the wire has been crimped between the dogs e and f³ the crimps are for a
certain distance of travel with the wheel d kept correctly in place by a curved
plate k mounted on the end of a slide bar k', the sliding of which is guided by the
stud from the base plate and the milled headed screw which passes through a
elot in the bar into a threaded hole in the base plate, so that the position of this
plate relatively to the wheel d may be adjustable.
The eccentric on the shaft a by the strap operates the arm * centred to.
another arm mounted on the axis and affixed to this arm is a pin carrying a
pawl for operating the ratchet wheel l affixed on the axis 4, which axis is carried
by the brackets and 18, and itself carries and rotates a bevel gear wheel which
engages another bevel gear wheel 110 mounted on an axis carried by the bearings
supported on the bracket . m is the table covered on its upper surface m²
preferably with india rubber composition cloth so as to give a frictional surface to
cause it to cling to a plate or sheet laid on it onto which the wire crimped and
disposed in a helical form is laid and pressed as will be further referred to.
The
On the underside of this table m is provided a sleeve or hollow bearing m³,
the lower end of which is seated on a conical foot step or support m³, whilst the
upper part of the sleeve m³ is received between and adjustably supported between.
friction rollers m², m and the horns m' projecting from the support b
roller m swings on the centred arm m' and is pressed more or less against the
sleeve m by means of the milled headed stud m³, screwed into the support 6' and
carrying also a check nut m².
Mounted on the axis and caused to rotate with it by means of a groove in
said axis engaged by a projection internally of the sleeve or shoulder of the same,.
is a wheel n, preferably of india rubber operating surface and metal sides.
This wheel n rotates with its periphery within the walls of the helical groove mlo
formed on the underside of the table m (shewn best in Fig. 4).
As the wheel n rotates, motion is imparted to the table in a circle, of which the
sleeve m³ is the centre, the helix below causes the wheel n to gradually traverse
the surface of the table from centre to circumference and in its traverse the bearing
of the wheel n being engaged by a fork o' of a swing arm o centred at o³ on a pin
from a bracket o³ carried by the framing.
.
The arm o also carries a hinged arm o, hinged at o and at its outer end
forming bearings in a fork for the spindle of a roller o, this arm also supports
the guide and feed plate o' for feeding the crimped wire to and beneath the
roller o onto the surface to which it is to be laid and by which it is to be held
in position.
The hinged arm o can be adjustably clamped down to press on the table m by
the swing plate of and screwed stem of mounted in a threaded hole in said plate.
This stem has a fly or thumb piece and set nut.
When the stem and swing plate are released the hinged arm and roller o can
be turned back out of the way to examine the work more conveniently, get access
to the parts or remove the table m.
The axis a is shewn as being provided with a handle wheel a' but other means
of driving may be substituted."

page_text: 11.
Having now particularly described and ascertained the nature of our said inven
tion, and in what manner the same is to be performed we declare that what. we
claim is :-
1. The combination and arrangement or construction of apparatus for crimping,
bending or shaping and holding wire or other suitable forms of metal, consisting of
an indented moving surface coöperated with by shaping and holding dogs or parts,
and retaining guides, suitable parts for respectively operating said crimping and
holding parts, and for supplying wire substantially as set forth.
2. In the manufacture of resistances for electrical purposes, the construction and
use of apparatus for crimping or shaping and holding wire or other suitable form
of metal and conveying the same in correct form to a surface prepared to receive
and retain the same in said form, for the arrangement of the crimped wire or like
form of metal in design upon the holding surface and for effecting efficient supply
of the wire or other form of metal to be crimped, all substantially as and for the
purpose set forth and shewn by the drawings.
3. In the manufacture of resistances for electrical purposes; the general con-
struction, arrangement and use of parts of apparatus, for crimping, bending or
shaping and holding wire or other forms of metal, for applying the same in
prearranged design on a retaining surface and for indicating as the operation
progresses the amount of the crimping effected and consequently the approximate
amount of electrical resistance prepared substantially as shewn and described.
4. The construction, arrangement and use of apparatus for the manufacture of
electrical resistances wherein wire or like forms of metal already crimped are laid
in a design upon a suitable receiving and retaining surface substantially as and for
the purposes set forth and shewn by the drawings.
Dated the 13th day of September 1894.
WM. BROOKES & SON,
55 & 56, Chancery Lane, London, Agents for the Applicants.