IMPROVEMENTS IN THE CONSTRUCTION OF PINIONS
Year: 1885

page_text: I HENRY WILLIAM LEY, 16 Bear Street, Leicester Square, London, Picture
Dealer do hereby declare the nature of my invention for IMPROVEMENTS IN THE
CONSTRUCTION OF PINIONS to be as follows:-
My invention relates to the manufacture in quantity and cheapening of that
class of pinions termed lantern pinions and consists in effecting the fixing in their
required positions of the wire leaves of such pinions by a medium which solidifies
from a molten or from a soft condition the said wires for the purposes of the
pinion-formation being held in position in suitably fashioned tools.

page_text: I, HENRY WILLIAM LEY of 16 Bear Street Leicester Square, London Mechanician,
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:
My invention relates to the manufacture in quantity and cheapening of that
class of pinions termed lantern pinions and consists in effecting the fixing in their
required positions of the wire leaves of such pinions by a medium which solidifies
from a molten or from a soft condition the said wires for the purposes of the
pinion-formation being held in position in suitably fashioned tools substantially
as hereinafter described.
The drawings hereunto annexed (and which aim at intelligibility rather than
due proportion of parts) represent tools for the manufacture in quantity of like-
sized lantern pinions of 6 leaves each upon the arbors of like-sized wheels they
further represent stages in the manufacture of the said pinions and a. wheel with a
said pinion on its arbor completed. The same letters throughout indicate the same
parts.
Figure 1 is a transverse section of the six leaves of a said pinion. Figure 9 an
elevation of a said wheel with a said pinion on its arbor completed. Figures 2
and 3 represent one of the tools employed in the manufacture of the said pinions,
Figure 2 being an elevation and Figure 3 a transverse section through X X' of
Figure 2. This tool C, of steel by preference, is of diameter in its smaller part c
not greater than the bounding circle of the pinion leaves, (see Figure 1), of length
equal about to the length the pinion is required to be, and has six longitudinal
grooves c¹ which in the smaller part c of the cylinder will. just comfortably hold
the wire for the pinion leaves. A vertical section of C through Y Y₁ of Figure 3 is
shown in Figure 8. Figure 5 represents in vertical section another tool say of iron
of 4 pieces D, E, E¹, and F circular in plan each. A receptacle G is formed in E
to hold the wheels on the arbors of which pinions are to be constructed and this
receptacle is continued through E into E¹ as shown at H. Formed in E is a
channel II to which E' gives a bottom. Figure 8 in its pieces K and L represents
in vertical section a third tool the pieces K and L being each circular in plan K
having a channel M M¹ similar to II in piece E and L giving a bottom to M M₁
as does E¹ to I I. In the vertical section of C shown in this Figure, it will be
observed that C has formed in it a hollow receptacle N similar to H in E and E¹.
Figures 4, 6, 7 and S show stages in the formation of a pinion on the arbor of a
wheel B. The process of the manufacture of the pinion is as follows. First are
cut six straight wires a to form its leaves but longer than these are required to be.
These wires are then placed in the grooves c¹ of C and there bound with binding
wire the ends of which are twisted together so as to tighten up the wires in their
several grooves. The wires bound in their places in the grooves of C are shown in
Figure 4. The thus made unity is then with B placed in D, E, E¹, and F as shown
in Figure 6 where B is in section C however with the attached pinion leaves in

page_text: elevation. In addition to its longitudinal grooves, C is bored with a central longi-
tudinal hole c² seen in Figures 3 and 8. In this is placed the wire that is to be
the arbor of B. In figure 6 this arbor J is seen in elevation in its place. The
uniting medium say for example molten solder is now poured in at I¹ and the space
vacant at H is filled by it. As soon as this metal is set F and E¹ are removed
the set metal cut at I and E removed as well as D from the other side of B. The
pinion as so far constructed is left which is shown in elevation in Figure 7,
b showing the uniting solder as moulded in recess H. Continuing the manufacture
from this stage C is slid along the pinion leaves until when B is placed in the
recess formed for it in K (Figure 8) the bottom of C rests on the bottom of the
recess in L. A washer O in halves is placed around the pinion leaves, the uniting
medium in this instance molten solder is poured in at M and the vacant space at N
is filled by it. As soon as it is set L is removed the runner cut at M and K
removed the binding wire of the pinion leaves cut and C removed and the ends of
wires a projecting through the set metal trimmed off completing the pinion as
shown in Figure 9, b¹ shewing the uniting solder as moulded in recess N.
Similarly but with suitable modifications of the pieces E and K may be manu-
factured on axes or arbors lantern pinions without wheel attachment as also may
be manufactured with suitable modifications of the tool C lantern pinions of other
number than six leaves. The length of C may be modified but must be always
sufficient to ensure accuracy in the positioning of the leaves of the pinions to be
constructed. The number of grooves in C is of course that or not less than that of
the required number of leaves Sometimes instead of making C as a grooved and
flanged cylinder, I give it plain cylindrical form of larger diameter than the smaller
part c of C as above described and instead of grooves furnish it with concentric
holes to hold instead of the former during the manufacture of a pinion the wires
for its leaves. Other modifications of C are sometimes convenient but it is always
essentially the C of the Figures.
Although I have given inolten solder as an example of the uniting medium it is
obvious that any other fusible alloy or metal may be employed, as also any of the
well known cements which solidify from a soft condition.
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
I claim is
The employment in the construction of lantern pinions of a medium which by
setting and hardening from a soft or from a molten condition fixes the pinion
leaves in the manner and by the means substantially as herein before described.
Dated this 4th day of December 1885