Improvements in Chucks.
Year: 1896

page_text: PROVISIONAL SPECIFICATION.
Improvements in Chucks.
We WILLIAM CRAWLEY Brampton Huntingdonshire Engineer and DANIEL
ALBONE of the Ivel Cycle Works, Biggleswade in the County of Bedford Cycle
Manufacturer do hereby declare the nature of this invention to be as follows:-
A Round Faceplate A to fit Lathe having Slots B & C in Face as shown in
drawing or other suitable arrangement to which is attached by Bolts or Studs D D
sliding in slots B & C a plate E with Brackets to form Bearings or Journals F
fitted with caps G G & bored to fit Pivots or Trunions H H of Plate I. Said
Caps G. G. to be bolted or screwed to Brackets to allow of free movement of Pivot
or Trunions H H but capable of being screwed tight to lock Plate I at any desired
angle.
Plate I is bored through centre and is also recessed to take round Plate J with
boss to fit centre bore and fitted with nut K to be moved with Hook or other
suitable spanner. Plate J revolves freely in Plate I, but may be fixed at any
angle by Nut K or other suitable device and is indexed on top Face to degrees of
circle.
One Bracket of Plate E is also fitted with segment of circle M and divided to
degrees & Index or Indicator fitted to Pivot or Trunion H to show angle of
Plate I.
Plate E to be adjusted or moved across main Faceplate by screw L, Rack &
Pinion or other suitable device.
Main Faceplate A may also be fitted with an extra Plate to allow of a second
cross movement at right angles thus giving 4 movements viz. 2 cross movements
at right angles & 2 Circular or Revolving motions in Plains at right angles.
Work or Castings may be fixed to Plate J by means of centre Stud, Bolt or
any other suitable arrangement.
October 30th 1896
WILLIAM CRAWLEY.
Improvements in Chucks.
We WILLIAM CRAWLEY of Brampton in the County of Huntingdon, Engineer,
and DANIEL ALBONE of the Ivel Cycle Works, Biggleswade in the County of
Bedford, Cycle Manufacturer 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 chucks more particularly for use in connection with
ercle manufacture

page_text: We will particularly describe our invention making reference to the accompany-
ing drawings in which;-
Figure 1 is a view in front elevation of a chuck constructed according to our
invention.
Figure 2 is a side view in section thereof.
Figure 3 is a view in back elevation of a modified form thereof, and
Figure 4 is a view in side elevation thereof.
Throughout the views similar parts are marked with like letters of reference.
A face plate A adapted to fit the lathe is provided with a bracket B free to
slide and be adjusted thereon by means of bolts or studs b sliding in slots a on
the plate A or in any other convenient manner. In Figures 1 and 2 the bracket B
is only capable of sliding and being adjusted in a vertical direction whereas in
Figures 3 and 4 movement of the bracket is possible in a vertical and horizontal
direction, this may be accomplished in any suitable manner as for example by
means of T-headed bolts. The heads b¹ of the bolts being capable of sliding in
horizontal slots formed in the bracket whilst the shanks are capable of sliding in
a vertical direction in the slots a of the plate.
A circular plate C is fitted to revolve in and be locked to the plate C¹ by means
of a nut c.
This plate C is furnished with trunnions or pivots c¹ adapted to pivot in
bearings 62 formed on the bracket B and to be moved (preferably by means of
a worm and pinion) and locked to any desired angle with respect to the face
plate. A hand or pointer c2 is attached to one of the said trunnions or pivots
so as to indicate the angle on a scale b3 formed on the side of the bracket.
The plate C is divided on its edge into degrees or divisions so as to indicate by
means of a finger on the plate C, the angle through which the said plate C is
turned.
The work to be operated on is secured to the plate C in any suitable manner;
a convenient method is to form in one with or to fix to the plate C a screw threaded
spindle E on which the work is held by means of a washer and nut e as shown
on the drawings in which a seat pillar lug is shown being turned in Figures 1 and 2
and a bottom bracket in Figure 4.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed, we declare that what
we claim is:-
(1) A new or improved chuck constructed arranged and adapted to be operated
substantially as hereinbefore described and shown.
(2) A chuck consisting essentially of a face plate, a bracket adapted to slide
and be adjusted thereon and furnished with bearings for the trunnions or pivots
of a plate on which is mounted a second plate capable of revolving and being
locked thereto and which is adapted to hold the work to be turned.
Dato this 2nd dow of Sontember 1807
this 2nd day of So
Neptember 1897
ROBERT E. PHILLIPS, Assoc. M. Inst. C.E., M. I. Mech. E.
Consulting Engineer and Patent Agent,
70 Chancery Lane, London, W.C., Agent for the Applicant.