Improvements in Jigs or Appliances for Securing Cycle Parts and similar objects while being Bored or Machined.
Year: 1896

page_text: Improvements in Jigs or Appliances for Securing Cycle Parts and
similar objects while being Bored or Machined.
I, FREDERICK JOHN THOMAS HASKEW, of the Firm of Frederick Haskew and
Company, Hydraulic, Electrical and General Engineers, of Enville Street Works,
Stourbridge, in the County of Worcester, do hereby declare the nature of this
invention to be as follows:-
This Invention consists of improvements in jigs or appliances for securing cycle
parts during boring and for other like purposes, my object being to construct a
convenient and effective jig of few and simple parts readily adjustable to suit the
work to be machined.
In constructing a cycle jig in accordance with my invention, I employ a standard
or framing, preferably of cast iron, having a base or foot formed with it for
mounting upon a drilling or boring machine. I form a suitable vertical boss or.
projection at the upper part of the standard to receive a sliding bush preferably
of steel by means of which one end of the bottom bracket, the ball head lug, seat
lug, or other cycle part is supported in position during the boring of the clear
way through it. The bush is pressed on to the bracket or other cycle part by a
forked lever pivotted upon the standard and operated by a screwed stem, provided
at.its upper end with a hand wheel or other suitable means by which it may be
turned or revolved, and engaging at its lower end with a nut carried in the base
or foot of the standard. On turning the stem in the required direction it is caused
to descend carrying with it the steel retaining bush hereinbefore described, until
the latter is forced tightly against the bracket. The lower end of the aperture
through the bush is made of a conical shape and suitable for the reception of the
bracket or other cycle part. The connection between the bush and the forked
lever is formed preferably by projecting lugs from the latter, which engage with
a groove formed on the exterior of the bush.
The lower or opposite end of the bracket, ball head lug, seat lug, or other cycle
part is supported on a suitable seating block which is placed in a bored hole in
the base of the jig in a direct line with the steel bush herein before described.
The act of screwing down the stem hereinbefore described to force the top bush
on to the bracket or other cycle part also clamps the part between the two supports
and thus effectually secures it in position. I provide blocks of varying forms and
sizes to suit the various parts to be machined.
During the boring of the apertures formed at an angle with the clear way through
the bottom bracket or other cycle part, such part is supported upon an adjustable
rod or arm which can be placed in a horizontal or inclined position as may be
required. The part is secured upon such support by means of the sliding bush
operated by the pivotted lever as herein before described. The rod or arm is

page_text: carried by clamping bolts which fit within slots formed in the standard such slots
being of sufficient length to permit of the necessary range of adjustment.
Dated this 17th day of October 1896.
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicant.
Improvements in Jigs or Appliances for Securing Cycle Parts and
similar objects while being Bored or Machined.
I, FREDERICK JOHN THOMAS HASKEW, of the Firm of Frederick Haskew and
Company, Hydraulic, Electrical and General Engineers, of Enville Street Works,
Stourbridge, in the County of Worcester, 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 consists of improvements in jigs or appliances for securing cycle
parts during boring and for other like purposes, my object being to construct a
convenient and effective jig of few and simple parts readily adjustable to suit
the work to be machined.
In the accompanying sheet of explanatory drawings to be hereinafter referred
to,-
Figure 1 is a sectional side elevation and Figure 2 an end elevation of my
improved cycle jig.
Figure 3 is a plan and Figure 4 a side elevation of the jig with the adjustable
supporting mandrel in position.
Figure 5 is a detail view representing one of the mandrel clamping bolts.
The same reference letters in the different views indicate the same parts.
In constructing a cycle jig in accordance with my invention, I employ a standard
or framing, preferably of cast iron, having a base or foot A formed with it for
mounting upon a drilling or boring machine. I form a suitable boss or pro-
jection A at the upper part of the standard to receive a sliding bush B, preferably
of steel, by means of which one end of the bottom bracket, the ball head lug, seat
lug, or other cycle part such as C is held in position during the boring. The
bush is pressed on to the bracket or other cycle part by a forked lever D pivotted
upon the standard and operated by a screwed stem I provided at its upper end with
a hand wheel For other suitable means by which it may be turned or revolved
and engaging at its lower end with a nut carried in the base or foot of the standard.
On turning the stem in the required direction the lever D) is caused to descend
carrying with it the steel retaining bush B, until the latter is forced tightly
against the cycle part C. The lower end of the aperture through the bush is made
of a conical shape and suitable for the reception of the bracket or other cycle
part. The connection between the bush B and the forked lever D is formed pre-
ferably by projecting lugs from the latter, which engage with a groove formed
on the exterior of the bush.
When boring the first clear way through the bracket ball head lug, seat lug,
or other cycle part C, the lower or opposite end of such part is supported on a
suitable seating block G (Figures 1 and 2), the stem of which is placed in a bored
hole in the base of the jig in a direct line with the steel bush. B hereinbefore
described.
The seating block G is secured in position and prevented from movement pre-
ferably by an ordinary screwed set pin.

page_text: The act of screwing down the stem E herein before described to force the top
bush on to the bracket or other cycle part also clamps the part between the two
supports and thus effectually secures it in position. I provide bushes and blocks
of varying forms and sizes to suit the various parts to be machined.
During the boring of the apertures formed at an angle with the clear way
through the bottom bracket or other cycle part, such part is supported upon the
free inner projecting end of an adjustable rod, arm, or mandrel as H (Figures 3, 4
and 5) which can be placed in a horizontal or inclined position as may be required.
The part is secured upon such support by means of the sliding bush B operated by
the lever D as hereinbefore described. The rod, arm or mandrel H is carried by
clamping bolts J in conjunction with caps J1 (such as illustrated at Figure 5)
which fit within slots formed in the standard, such slots being of sufficient length
to permit of the necessary range of adjustment. Instead of providing a slot for
each of the bolts J, I preferably dispense with the slot for the inner bolt and
provide in its place apertures as (Figure 1) in either of which the inner bolt can.
be inserted. The graduations on the framing beyond the outer slot (Figure 1)
are for the purpose of indicating varying angles or positions to which the mandrel
may be set.
The adjustable stop bolt K prevents rotation of the cycle part during the boring
or machining process..
For boring or machining apertures formed at a very acute angle with another
aperture through the same cycle part, I provide a mandrel having its front end
bent or inclined as may be required.
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 L
claim is:
1. A cycle jig or like appliance substantially as and for the purposes described
and as illustrated.
2. In cycle jigs and like appliances the combination of a sliding bush B with a
lever D and means for operating the same, substantially as and for the purposes
described and as illustrated.
3. The combination with a cycle jig or like appliance, of a mandrel H having
a free inner projecting end, and adjustably secured to the jig frame or standard,
substantially as and for the purposes described and as illustrated.
4. The construction and combination of parts forming the improvements in
cycle jigs substantially as described and as illustrated.
Dated this 17th day of July 1897
MARKS & CLERK,
18 Southampton Buildings, London, W.C., and
13 Temple Street, Birmingham, Agents for the Applicant.