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Патент USA US2114033

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April l2, 1938.
`
` 1
2,114,033
A. 1_. scHuYLER
LOCK PARTSV‘AND METHOD OF` FORMING THEM
Filed June 14, 1935
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‘5 lPatented Apr. `12,
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l 2,114,033A
PATENT OFFICE ‘
f
Í-METHOD oFfroRmNG
"LOCK raars
, "Andrew L. Schuyler, La Grange, lll.,- assignor to
Westem` ,ElectricV fCompany,` Incorporated,« New
(_
‘
I Y York, N. Y., a'corporation oLNewxYork .-
`
`
‘
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yApplication¿Jam? 14, 1935, serial No. .26,599 "
,solaimsq(Craze-14st »
v
Figs. 14,
16v, and V1'? are `plan views of an
'I‘his invention relates to lockl parts and a' meth
type of upper half of a. lock bolt assembly;
od of forming thennand more particularly to fother
I Fig. A18 is a plan view of the lower half of a
bolts for rotor center’tumblertype rlocksland a
lock bolt assembly with which the upper half ` y
' shown in'Figs".> 14 to 17, inclusive, is used;
Ã, .5 `methodfoffforming`
, An ¿object Hofy the them.
present invention.
_
"
is to‘ pijo
Figs'.` 19, 20 and 21` are plan‘views of the as- 6
`sembled` upper and lower parts of the lo'ck `bolt `
_vide a simple and inexpénsive‘lockbolt andan
`
feconomical'rnethod of lInanuiacturing it. .
`
assembly during the varioussteps in its manu
‘ . Y `-`In accordance withïonejembodiment, the in_
and
verition, as applied to locks for` telephone pay staf facture,
_ Fig'. 22`is a
plan View. of a lock with the cover 10 K
‘10 non equipment, centempiatesja loci; boitier .a - plate'removed~ and illustrating> the 4type of p ylock v
rotor center4 tumbler type lock.forn'iefi` _fromsheet 3 `bolt assembly. shown in Figs. 19 to 21, in posi
`rifietalstocl: by blanlring,> perforating andvbending
`tion in a lock. ' I
\ l’thej lower half of.the‘bolty and'attaching a hat
‘ 'plate thereto> at the latch` portion, thenreducing
@14" the thickness oftheiat‘ch portion of the bon by
swaging it `tothe proper thickness and riveting
a‘fsubstantially U-sh'aped‘upper half of a _lock
y
Ä
In the embodiment of the invention disclosed
in Figs.` l tof13, a lock bolt `assembly is .formed 15
by stamping 'ablank` I (Fig. 1) `from a strip of
sheet „metal stock_wherein the blank I has a slot»
ZÍand apertures-,3 and! formed therein >in the
bolt, which hasbe'en formed byï aserles of punch,-y
stamping operation. L A projecting portionä` is ‘
i , ing, 'shaving,.be`nding andslotting operations ,onty also formed fas apart of the blank Iin this`Á
` n" ajpún'ch press, to theiçwer hair or the lock` boit`
`
‘
assembly.
"
"-
„
`
`
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stamping operation.
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. 20
The blank I is then subjected to anotherpunchf"
I
ï ,In accordance with another embodiment, the ingoperation in which,- operation the projecting;
upperhalf fof a lock `bolt assembly is formedv .byv portion y5 is'`b_e`nt"upwardlywas> shown in-Fig. 2- ,_
è perforating and ustampilng'a blank; from a s_heet n toprovide a strengthening rib -when the bolt is f
2B of "tlat metal stock, simultaneously shearing Vvand
assembledina lock.
„ bending a portion ofthe' blank,n forming a second
Ü bend inthe blankandattaching the part just def;
scribed to la blank of ` e. predetermined `shape _by
`
.
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.
25
¿In the' next succeeding operation, a fiat metal ì
` stript' is secured >to the lower or forward end.
of -the blank llbyfw'eldingit at points 1 as shown..
welding it theretofthenjswagwing the joined parts in Fig. 3. " This is to provide a latching portion 30 `
30"’.to "a predetermined.dimension vin .thickness- and
on the` bolt of a.,v predetermined thickness.
`After the strip` Iì` is secured to ytheblank I l
shaving thefedgespf thev joined-parts toa pre-_
determinedcontour.v
y,
'
l
l
f
as shownlin‘Fig. 3„the lower or forwardy end of
1.-.*
"O'ther featuresand advantages'of `the inven-k the bolt is subjected yltçyrnfçessure to-swage-thatv
wtion will become apparent fromgthe following de
portion thereof to the desired thickness.` `This>
“ 35 ltailed description when considered in conjunction
with they accompanying drawings, wherein
Will‘res‘ult irrforcing» somey of thev metal lof` lthe '
blank I and the strip ‘I out of its former shape._
'
Figs.` 1 to 4 are plan-views of the lowerpor
as indicated by the rough edges at_8 (Fig. 4). The
assembled'strip 6 and blank I are then ready'to`
tion of ‘the lock bolt‘assembly'in "the various
be assembledwith- the upperhalf of the bolt 540
“I stages of its manufacture;- f
„ Figs.y5 and 6 are endviews of the upper half » '
" ,of` the lock bolt assembly- as shown“ in` Figs'. `2
and 3;"
l
_
n
,
4
Figs.` '1, 8, 9 and 10>are afplan‘view, 'a sidevìew';
a>` plan view and an .end elevationaly view, re
assembly.
.
_'
`
._
1
n
,Theupperhalf of the bolt asrsemblyisi'ormed`
‘ by stamping a blank- 9 havingthe contour shown
in
f7 `from sheet‘metal stock. This blank 9
` is thenstood on edge and shaved to form abev-«45
elededgeat I0 and a V-shaped groove at_ Il ,
speçnvely, .of the uppeïßhalf .of >the Jock fbolu'
(Fig. 8). f After having the beveled edge and
assembly »in- the various ~stages of its manufac
ture;
A
.I
V-shapedgroove formed in the blank 9, theblank .
_
Figs. 11 »and 12 are plan viewsßof the upper and:
"150 `lower half, offthe lock bolt‘y assemblyV after they
isagain laid fiat land slottedin a punch :pressr
as shown atv I2 (Fig. 9`) .\ After this slotting‘oper-'~ 50
have been assembled‘illustrating/the two stagesv ati-on, the blank Il is subjected to another‘punch
of! manufacture'` through "which" they` pass" after „ press operation Awhich forms it to a substantially
" they are assembled;
f Fig. 13 is an en d
`
ßyinFig. 12;
f
<
"
Ur-shaped‘contour as` shown in Fig. 10 wherein`
the. sides are formed. ,These sides will„in the"
vìeyypf the structure shown ‘ `finished
lock shown in Fig. 22,‘coopera.te with 55
2
2,114,083
the code notches M formed in the tumblers upon
operation of the lock.
It.will be noted that in Figs. 7, 9 and 10 the
scribed and the latching portion has been swaged
to the desired thickness, the edges of the mate
rial swaged out of their former position in the
swaging operation are shaved along the lines Il
and 4 in the blank I and serve as rivets to hold
to the desired contour and the lock bolt assembly
is ready to be assembled in a lock of the type
blank l has a pair of upwardly extending lugs
I3. These lugs are insertêd in the apertures 3
the formed blank 2 which constitutes the upper
half of the bolt .assembly in place on the lower
10
disclosed in Fig. 22 -‘and Patent No. 1,793,254,
half of the bolt assembly.
- wherein the lock bolt,>l assembly designated gen-l
in Fig. 11, thefedges of the latching portionv of
the- bolt which ismade up of strip 8 and forward
blers I3, and fixed tumbler 34 in a housing Il. 10
The lock shown in Fig. 2_2 with the top plate re
moved is a known type. of rotor center tumbler
type lock as shown by Patent No. 1,793,254 in
, which the‘lOck bolt assembly II acts in the-same
After the parts are thus assembled as shown` erallyin Fig. 22 by the-numeral 3| is assembled
with a lock center _or barrel 32. movable tum
or lower end ofthe blank I are shaved at I5 to
the desired contour, thereby removing the rough
15 edges shown at l (Fiss. 4'and 11). The final bolt
assembly comprising the upper half formed from‘
the blank l and the lower half formed from the
blank I and strip 8 will then be as shown in
Figs. 12 and,13. In this condition the bolt as
20 sembly is ready to be assembled as shown iny
Fig. 22 in a lock of the same general type but not
the exact construction of the lock shown in the
patent to O. A. Shann, 1,793,254, patenteddFeb
ruary 17, 1931.
"
In another embodiment of the invention a
similar type of lock bolt assembly is provided.
'I'his latter type of lock bolt is formed in a man
ner similar to that described hereinbeforeV except
that being somewhat simpler in construction
30 there are fewer operations required in the manu
facture of it. Figs. 14 to 21 illustrate the steps in
the manufacture of this type of lock bolt..
In accordance with this embodiment of the
invention, a blank
35
manner as heretofore and is of the same general
contour as those heretofore used, the distinc
tion being that the bolt is formed entirely by
punch press operations from sheet metal stock
and is therefore much cheaper to manufacture
than those „heretofore known.
What is claimed is:` _l
Y
,
1. In‘a lock, a'bolt assembly comprising a latch
portion formed of two sheet metal strips welded
together and swaged to the desired thickness,- a
base portion comprising a prolongation of one
of said sheet metal strips formed to Aslide in the>
lock and to cooperate with an actuating lever in
the lock, and an upper portion formed of a single
piece of sheet metal bent to form a' lug or stud
for cooperation with the tumblers of the lock. 30
' 2. A method of forming bolts for rotor center
tumbler type locks Vwhich includes punching a
blank from sheet metal stock to va predeter~
mined configuration to form 'a part of a latch
portion, a lever cooperating portion and a guide
portion, punching-a blank from sheetmetal stock
for use as an upper bolt portion, bending the, sec
40 of the latching portion and lug of the bolt. After
the blankZIl has been stamped from stock it is
sheared along the line 22 and bent along the line
2l as shown in Fig. 15_. After the blank has been
stamped as shown in Fig. 14 and bent as shown in
45 Fig. 15,- it is again subjected to a bending opera
tion to bend a portion of it >forwardly as shown
ì in Fig. 16 along the line 2|. After the bending
. operations have b'een performed, the blank is set
ond mentioned blank to a shape so that appor
tion thereof will cooperate with codenotches'in 40
the tumblers of a lock, and' securing it to said
ilrst blank.
3. A» method of forming bolts‘for rotor center
tumbler type locks which includes punching a
blank from sheet metal stock to a predetermined
configuration to form a part of a latch' portion,
a lever cooperating‘portion anda guidetportion,
101 “Se
as an upper _bolt portion, bending'the second me`n`-`
flat in a ñxture and shaved to form a V-shaped' , punching a'blank from sheet ,metal
groove as shown at ` 25 (Fig. 17) in the portion.
lthereof which was bent downwardly at 23 as
‘ shown in Fig. 20 and then twisted forwardly by
bending along the line A24 as shown in Fig. 16.
The blank 2l which has been formed to the shape
shown in Fig. 17, constitutes the upper .half of
honed blank to a `shape so that a portion thereof'
will cooperate with code notches in the >tumblers
of a lock, shaving'- a V-shaped safety‘not'ch in
a portion of said bent blank, welding a thickening’
plate to the first formed-blank, swaging the joined
‘ this type of lock bolt assembly and also provides first mentioned blank andthickening plate to the
a thickening or filler plate for the latching por-’ ldesired thicknessto fornr‘a latch portion, and
shaving the latch portion to the desired contour.
tion of the bolt.
j -The lower portion
4. A method of forming-bolts for rotor center
of the bolt is- formed by
‘stamping a blank 28 from sheet metal stock to' ` tumbler type locks-which includes punching a
the contour shown in Fig. 18, wherein there is a blank from _sheet metal stock- to a predetermined
guide slot 40 and a rounded cut out portion conilguration to form a part oi' a latch portion,
‘I1 .for cooperation with an actuating lever on a lever cooperating portion 'anda guide portion,
-the barrel 32 of a lock (Fig. 22). The blank 20, punching a> blank from sheet metal stock for use _
`as shown in Fig. 17, is secured to the blank 28 as an upper boltportion, bending the second
mentioned blank to a shape .so that a portion'
by spot _welding it thereto at the-points 21 where
upongthe assembled upper and lower halves of
the assembly arev subjected to pressure at the
latching portion. This operation will reduce the
kthickness of the latching portion by swaging the
surplus rmetal downwardly and to the sides as
thereof will cooperate with code notches inthe
tumblers of a lock, shaving a V-shaped safetyl
notch in a portion of said bent blank, welding a
thickening plate which may constitute part of
the bent blank to the ilrst formed blank, swaging
shown in Fig. 20 to reduce the thickness of the Y the Joined first mentioned blank and thickening
latching portion to the desired dimension (see
111g. 20). After the upper and lower halves of
- . the` assembly have been joined together as de- ,
plate to the desired thickness toV form a latch por
tion, and shaving the latch portion to the desired ,
contour.
.
5. In a lock, a bolt assembly comprising a latch
3
2,114,033
" portion formed of two sheet metal strips welded
together and swaged to the desired thickness. a
`base portion comprising a prolongation of one
of said sheet metal strips formed to slider in the
iock‘and to cooperate with~ an actuating lever in
` the lock, and an upper portion formed of a single
` piece of sheet metal bent to form a lug or stud
1i for cooperation with the tumblers and having a
` i V-shaped groove ,shaved therein'îor cooperation
"with corresponding safety grooves in the tumblers
of the lock.
Y
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‘
‘
`
'
*6. In a lock, a. bolt comprising a base plate
` ',formed from a single sheet of metal and `having a
‘ guide slot formed therein, aportion adapted to
cooperate with the actuating lever of the lock and
‘ ¿an extending portion to provide a part of the
,A latching portion of the lock, a thickening plate
\ 'attached to the base at the latching portion there
« of, said thickening plate and base being swaged
to the desired thickness and shaved to the desired
contour, an upper portion adapted to cooperate
`, with the tumblers of the‘lock comprising a sheet
« ` metal blank punched to a predetermined contour
` n and having its edges ¿shaved to form a bevel on
bend a portion of the blank at right angles to
the remainder of the blank, forming a right angle
bend in the blank at right angles to the bend pre
viously formed therein, shaving a v_-shaped notch
in one of the bent portions, punchingy aV base
from sheet metal stock, Welding a portion of the `
ñrst mentioned blank to the‘base, swagîng the
base and first mentioned blank where they are
joined together by welding to a predetermined
thickness, and shaving. the welded together base 10
and blank to the desired contour for use as the
latching portion of a lock bolt.
8. A method of forming bolts for vrotor center l
tumbler type locks comprising punching an aper
tured and slotted lblank from sheet ymetal stock, 15
bending a projecting portion of the blank at right
angles to the remainder thereof to form a
strengthening rib, welding a flat sheet metal plate i
to a projecting portion of the blank, swaging the welded together portions of the blank and the 20
`plate to a predetermined thickness, forming an
upper portion of the bolt by punching an irregu
larly shaped blank from sheet metal stock, stand
ing the irregularly shaped blank on edge,- and
25
‘ one edge and a V-'shaped groove inthe othery ' shaving a bevel on one edge thereof and a V
»_edg‘e,` the upper portion being bent to cooperate . shaped groove on the other edge thereof, punch-y
with the safety notches and code lnotches on the , ‘ ing a notch in the blankthus formed, bending
the blank to a substantially‘U-shaped conñgura
tion,v inserting ' two portions of the irregularly
plate by riveting.
`
'
y 7. lA method of formingtboltsffor rotor center g shaped blank which is now of ' U-shaped conñgu 30
' ` 1 tumblers of the lock and beingvñxed to the base
‘ tumbler ¿type locks comprising" punching a blank
from sheet metal and concurrently perforatlng
` `an aperture therein, shearing and bending a
.portion of the blank down to the aperture yto
ration in the apertures formed in the base, rivet
ing the U-shaped member to the base, and shav
ing the latching portion to they desired contour. ’
~ `
ANDREW L. SCHUYLER.
‘
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