US1710080A - Rotary eraser - Google Patents
Rotary eraser Download PDFInfo
- Publication number
- US1710080A US1710080A US156348A US15634826A US1710080A US 1710080 A US1710080 A US 1710080A US 156348 A US156348 A US 156348A US 15634826 A US15634826 A US 15634826A US 1710080 A US1710080 A US 1710080A
- Authority
- US
- United States
- Prior art keywords
- barrel
- eraser
- spindle
- erasing
- shank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L19/00—Erasers, rubbers, or erasing devices; Holders therefor
- B43L19/0006—Erasers, rubbers, or erasing devices; Holders therefor motor-driven
- B43L19/0012—Mechanical motors, e.g. springs, spindles
Definitions
- Important objects of the invention are to provide an eraser of the character described.
- k which is rotatably operable for facilitating the erasing of typewritten errors within the contines of a lii'nited space without erasing adjacent matter, which is simple in its con-k struction and arrangement, strong, durable and eliicient in its use, compact conveniently operable, attractive in appearance and comparatively inexpensiveto manufacture.
- Figure 2 is a bottom plan view of 'the bottom cap. f f
- FIG. 1 denotes an elongated, hollow, cylindrical barrel.
- the latter is provided with a cover cap 2 and a bottom cap il, both of which have a de- Atacliable threaded connection with resped tive en ds of the barrel 1.y
- the bottoni cap 3 is formed with an aperture 4t having four regularly arranged inwardly curved side walls 5, clearly shown in Figure 2.
- a spiral screw spindle 6 extends through 'the bottom cap aperture l and isprovii'led with a. cylindrical shank 7 which is fixed to the upper end thereof.
- the spindle 6 is preti erably constructed from square stock whichl vice,'the contacting engagement ofthe aperture side walls with thespindle 6 will imf part a rotary movement to the latter in a manner well known in the art.
- the 'spindle shank 7 is rotatably mounted in the barrel 1 and is longitudinally shiftable inthe latter.
- the top of the shank 7 is with a pocket 9 formed in the lower end of a longitudinally shiftable bearing slide 10 n'iounted in the rbarrel 1 above the shank 7.
- a bearing ball 11, facilitating the rotation of the spindle 6, is positioned in the barrel l, and seats in the pockets 8 and 9 intermediate oil the shank 7 and the bearing slide 10.
- a spiral spring 12 having its upper end n, abutting against the cover ycap 2 and having its lower end attached to the bearing slide 10, is mounted in the upper end portion of thereof, by means of a clamping sleeve 17.
- the kupperend of the latter threadably engages the stem upper end letwhile the lower f end thereof is correspondingly tapered and engages the lower tapered end of the stem 13, for clamping the eraser element 16 in position. ,j
- the release of the clamping sleeve 17 permits of the adjustment or replacement of the eraser element 16 in the stem 13.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mechanical Pencils And Projecting And Retracting Systems Therefor, And Multi-System Writing Instruments (AREA)
Description
E. SHENKAN ROTARY ERASER April,23, 1929.
Filed Dec. 22, 1926 Patented pr. 23, 19729.
nMAnnnr. sieren-Kamer PITTSBURGH, :'ENNSYIQVANKIA ROTARY ERASER.
Application rfiled December 22, 1926. Serial No. 15654348.
'My Vinvention .relates animprovement in erasers, kand wh ile primarily yintemled for erasing incorrect single letters of typewritten words while the sheet oiA paper 1s 1n position in the typewriter, it will be obvious that the kdevice may be successfully employed for any other erasing purposes wherein it is found to be applicable.
Important objects of the invention are to provide an eraser of the character described.
kwhich is rotatably operable for facilitating the erasing of typewritten errors within the contines of a lii'nited space without erasing adjacent matter, which is simple in its con-k struction and arrangement, strong, durable and eliicient in its use, compact conveniently operable, attractive in appearance and comparatively inexpensiveto manufacture.
W ith the foregoing and other objects in view which will appear as the description proceeds, the invention resides in the conn biuation ai details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of the invention can be made within the scope of what is claimed without departing from the spirit of the invention. n n 1 in thedrawing wherein like numerals of reference designate corresponding` 'parts throughout the several views `Figure l is aside elevational View, partly in cross section, of a rotary eraser constructed in accordance with the invention.
.Figure 2 is a bottom plan view of 'the bottom cap. f f
Referring' in detail to the drawing 1 denotes an elongated, hollow, cylindrical barrel. The latter is provided with a cover cap 2 and a bottom cap il, both of which have a de- Atacliable threaded connection with resped tive en ds of the barrel 1.y The bottoni cap 3 is formed with an aperture 4t having four regularly arranged inwardly curved side walls 5, clearly shown in Figure 2.
A spiral screw spindle 6 extends through 'the bottom cap aperture l and isprovii'led with a. cylindrical shank 7 which is fixed to the upper end thereof.
shifted in either direction through the bot-` tom cap aperture Ll, by the rcciprocation'of the barrel 1, during the operation of the de-r formed with a :rangement of parts and in the The spindle 6 is preti erably constructed from square stock whichl vice,'the contacting engagement ofthe aperture side walls with thespindle 6 will imf part a rotary movement to the latter in a manner well known in the art. f The 'spindle shank 7 is rotatably mounted in the barrel 1 and is longitudinally shiftable inthe latter. The top of the shank 7 is with a pocket 9 formed in the lower end of a longitudinally shiftable bearing slide 10 n'iounted in the rbarrel 1 above the shank 7. A bearing ball 11, facilitating the rotation of the spindle 6, is positioned in the barrel l, and seats in the pockets 8 and 9 intermediate oil the shank 7 and the bearing slide 10.
A spiral spring 12, having its upper end n, abutting against the cover ycap 2 and having its lower end attached to the bearing slide 10, is mounted in the upper end portion of thereof, by means of a clamping sleeve 17.
The kupperend of the latter threadably engages the stem upper end letwhile the lower f end thereof is correspondingly tapered and engages the lower tapered end of the stem 13, for clamping the eraser element 16 in position. ,j The release of the clamping sleeve 17 permits of the adjustment or replacement of the eraser element 16 in the stem 13.
ln practice the operation of my improved eraser is as follows Normally the spindle 6 is maintained in the projecting position by the action of the spring' 12, as shown in Figure 1. The eraser element 16 is positioned to cover the surface to be erased. By forcing the barrel 1 downwardly, the spindle 6 and the associated eraser element 16, carried thereby, will ,be rotated to effect the erasing operation. The spindle 6 will now have entered the lower end portion of the barrel 1 and the spring 12 will be compressed. Upon releasing the pressure onthe barrel 1, the action of the compressed spring 1Q. will force the spindle 6 to the projecting position, meantime rotating the eraser element 16 for containing the erasing operation. The reciprocation of the barrel pocket 8, which corresponds erasing is completed.
In testimony whereof I :LHX my signature.
Y' -EMANIIEL SHENKAN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US156348A US1710080A (en) | 1926-12-22 | 1926-12-22 | Rotary eraser |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US156348A US1710080A (en) | 1926-12-22 | 1926-12-22 | Rotary eraser |
Publications (1)
Publication Number | Publication Date |
---|---|
US1710080A true US1710080A (en) | 1929-04-23 |
Family
ID=22559191
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US156348A Expired - Lifetime US1710080A (en) | 1926-12-22 | 1926-12-22 | Rotary eraser |
Country Status (1)
Country | Link |
---|---|
US (1) | US1710080A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040148719A1 (en) * | 2003-02-05 | 2004-08-05 | Lychwick Kurt P. | Orbital eraser and scratch-off card remover |
-
1926
- 1926-12-22 US US156348A patent/US1710080A/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040148719A1 (en) * | 2003-02-05 | 2004-08-05 | Lychwick Kurt P. | Orbital eraser and scratch-off card remover |
US7039981B2 (en) * | 2003-02-05 | 2006-05-09 | Lychwick Kurt P | Orbital eraser and scratch-off card remover |
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