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Патент USA US2411855

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Dec. 3, 1946.
Filed Aug. 28, 1943
2 Sheets-Sheet 1
‘s. F. GRAFF'.
Filed Aug; 28, 1945_
2 Sheets-Sheet 2
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Jianley ff] Graff
Patented Dec. 3,, F946
JStanley' F. Graft‘, Minneapolis,
, ‘Application August 28, 1943, Serial No'. 500,331 ‘_
1 4 Claims. (01. ‘112-62)
" My. present invention relates to improvements
in shoe stitching machines of the curved needle
variety, and more particularly the invention, pro
vides an improved work table for such curved
needle machines.
Particularly "the improvement is directed v‘ to’
the provision of the work table with a'detachably
and replaceable needle plate, and‘ with avsole guid-'
ing block or device. which, without detachment
and needle through the same are and through the
opening in the work table.
' \
In the standard machine the work table is
formed‘ on the extended end of a table supporting
arm 16 which, in the drawings, is shown as rigidly
securedto the fixed head In by means of a ma
chine screw l1 and’ dowel pin'l8 but which, of
course, ‘can be supported in any suitable way.
In the application of my invention, the ?xed
arm Iii, at its extended end,_ carries the table.
or removal, may be given the ?nest and most 10 As
‘a feature of invention the table is provided
minute kind of adjustments to vary the distance
of the line of stitches from the edge of the sole.
with'a detachable needle plate or face plate. The
table proper is preferably formed integral with
.In the accompanying drawings the improved ‘
the arm 15 and‘is a bifurcated or 'U -shaped struc
features are shown as applied to the ?xed arm
15 ture, indicated at‘ l9,v and shown in detail in
ofa' shoe stitching machine such as is well known
Fig. 6." This table l9 has the customary depend- to the trade as the “Landis” machine.
ing lip 29 that is engageable with the side of the
- Referring to the drawings wherein like‘ char
acters indicate like parts throughout the several
Fig. l is a perspective showing some of the
parts of the standard “Landis” curved needle
machine and showing in detail the improved
work table and attachments;
shoe upper. The detachable needle plate, as best
shown in Fig.- 7, is a bifurcated structure 2!
formed with ‘an outer portion having a slot or
needle passage 22.- The needle passage 22 is
formed in avertica'llythickened portion of the
needle plate that‘ is seated in a depressed portion
23 of the table. The needle plate 2| is rigidly but
Fig. 2 is a section taken on the line 2-2 of 25 detachably secured to the table by machine screws
Fig. 1;
24 or the like passed through perforations in the
Fig. 3 is a perspective showing the sole guiding
prongs of said needle plate and screwed into
blocker element turned upside down;
threaded seats 25 in the prongs of the table. The
Fig. 4 is a perspective showing a clamping block
passage between the prongs of the table [9 is con
that forms an element of the means for securing 30 siderably wider'than the passage between the
the sole guide block to the work table;
Fig. 5 is a section taken on the line 5-5 of
Fig. 4;
Fig. 6 is a perspective showing the work table
with the detachable facing or needle plate re
moved therefrom;
Fig. '7 is a perspective showing the needle plate
removed from the work table and the co-operating
prongs of the needle plate 2|.
Fitted to slide in the space between the prongs
of the table [9 and to bear against the overlying
portions of the prongs of the needle plate 2|
is a rectangular clamping block 26.
Seated to slide on the prongs of the needle
plate 2| is a guide block 21 that is preferably of
elongated rectangular form and is threaded to a
clamping screws removed from the needle plate;
Fig. 8 is an enlarged section taken on the line
8-8 of Fig. 1; and
Fig. 9 is a bottom plan view showing a portion
of the sole of a shoe and indicating the line of
stitches that secure the same to the shoe welt.
As above indicated the invention as illustrated 45
receive the threaded shank of a large clamping
screw 28, see particularly Fig. 2. This clamping
screw 28 at its lower end has a round head 29
that is seated to rotate in the annular recess
of the clamping block 26. The threaded stern of
the screw 28 works 'freely and with clearance
through a large central passage 26" of the clamp
is applied to the stitching machine of the “Landis”
type. Of the well known parts of the machine,
ing block 26.
insofar as they are shown in the drawings, the
Obviously with the structure described, when
the clamping screw 23 is loosened the guide block
21 can be adjusted to just the desired distances‘
numeral It! indicates the ?xed head, the numeral
H the oscillatory needle guide, the numeral H 50 from the needle passage and from the line of
movement of the needle; and when the said screw
the needle, the numeral [3 the awl and the
is tightened, the said block will be securely an
numeral M the channel cutter that carries the
chored to the needle plate or top element of the
presser foot IS. The needle and the awl are of
table. Of course. the clamping block 26 is freely
the curved type carried by customary oscillatory
devices, not shown, but which move the said awl 55 ‘movable with the guide block 21 and in the chan~
' nel like seat formed therefor in the prongs of
the table 19.
As an e?icient and desirable way of tightening
and loosening the clamping screw 28 the latter
is shown as formed with an angular passage to .
receive the angular end of the wrench 30 shown
in Fig. 8.
In Fig. 9 the shoe sole A is indicated as pro
vided with two ‘rows of stitches alocated at differ
Whereas the invention is herein illustrated in
connection with a “Landis” curved needle ma
chine, it should be understood that the inven
tion is equally adapted for use in connection with
any curved needle shoe stitching machine.
What I claim is:
l. A work table for shoe sole'stitching machines
formed with a needle passage, said table having
a shouldered longitudinal slot, a guide block
ent distances ‘from the edge of the sole. Ob 10 seated on said table and having a portion working
viously, the guide block 21 can be accurately set
in the slot of said table, a clamping block work
to guide the shoe for the forming of stitches just
ing in said slot and having a clamping action on
the desired distances from the edge of the shoe
the shoulders thereof, and a clamping screw hav
ing a head rotatably mounted in said clamping
sole. The shoe sole will, of course, bear against
the front face of the guide block when the shoe 15 block for sliding movement therewith and having
threaded engagement with said guide block.
is applied as shown in Fig. 8. In the said ‘view,
2. A Work table for shoe sole stitching ma
Fig, 8, the shoe sole is indicated by the character
chines having a detachable face plate formed with
B, the shoe welt by the character C and the _shoe
upper by the character D.
a needle passage, said face plate having a slot at
one side of said needle passage, said table having
In setting the guide block 2'! it is only nec
essary to loosen the screw 28 enough to permit
a wider slot under-lying the slot of said face plate,
a guide block mounted on said face plate and pro
the sliding movement of the block and this, of
vided with a portion extended into the slot of said
course, can be done and the block relocked in a
face plate, a clamping block slidably mounted in
most accurate adjustment Without at any time
removing the guide block from the table.
25 the slot of said table and engaging the over-lying
portion of said face plate,-and a clamping screw
In practice it has been found that it will often
having a head rotatably seated in said clamping
happen that the needle or the awl or both will be
block and having threaded engagement with said
slightly bent and will engage the rim of the slot
or passage in the table and deface the same so
guide block.
that replacement of the entire table has been 30
3. The structure de?ned in claim 2 in which
said detachable face plate and the body of said
work table have over-lapping arm portions, and
means detachably connecting the arm portions.
4. The structure de?ned in claim 2 in which
said face plate and the body of said work table
are formed with over-lapping U-shaped portions,
the portion of said face plate in which the needle
passage is formed being of increased thickness
With the face or needle plate made
detachable, it is only necessary to replace the
latter Without the removal or renewing of the
table. The shoulders formed between the offsets
of the table and face plate serve to more ac
curately adjust these two elements before the
screws 24 have been applied and tightened.
In actual practice the invention above de
scribed has been found thoroughly practical and
and ?tting a depression formed by a reduced
desirable for the purposes had in view. Of course, 40 under-lying portion of said table.
the devices will be modi?ed as to details of con~
struction and arrangement of parts, within the
scope of the invention herein disclosed and
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