US1922532A - Attachment for portable drills - Google Patents
Attachment for portable drills Download PDFInfo
- Publication number
- US1922532A US1922532A US521217A US52121731A US1922532A US 1922532 A US1922532 A US 1922532A US 521217 A US521217 A US 521217A US 52121731 A US52121731 A US 52121731A US 1922532 A US1922532 A US 1922532A
- Authority
- US
- United States
- Prior art keywords
- drill
- attachment
- portable
- guide
- rack
- 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
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25H—WORKSHOP EQUIPMENT, e.g. FOR MARKING-OUT WORK; STORAGE MEANS FOR WORKSHOPS
- B25H1/00—Work benches; Portable stands or supports for positioning portable tools or work to be operated on thereby
- B25H1/0021—Stands, supports or guiding devices for positioning portable tools or for securing them to the work
- B25H1/0057—Devices for securing hand tools to the work
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S408/00—Cutting by use of rotating axially moving tool
- Y10S408/712—Drill press adapted to use portable hand drill
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T408/00—Cutting by use of rotating axially moving tool
- Y10T408/55—Cutting by use of rotating axially moving tool with work-engaging structure other than Tool or tool-support
- Y10T408/561—Having tool-opposing, work-engaging surface
- Y10T408/5626—Having tool-opposing, work-engaging surface with means to move Tool relative to other work-engaging structure along tool-axis
Definitions
- This invention relates generally to portable drills, and particularly to an attachment for increasing the usefulness thereof.
- the main object of this invention is to provide a simple means for increasing the force which can be brought to bear against the drill.
- the second object is to increase the ease with which holes can be drilled and to increase the accuracy of the drilling by reducing the amount of physical effort required and permitting the operator to devote more attention to the manner in which the drill is held.
- the third object is to provide an attachment for portable drills by means of which same may be easily converted into a post drill.
- Fig. 1 is a side elevation of the drill and attachment.
- Fig. 2 is an end elevation.
- Fig. 3 is a plan.
- Fig. 4 is a horizontal section along the line 4-4 in Fig. 1.
- the frame of the attachment consists ofan elongated guide 16 to the upper portion of which is secured a rack 17 adapted to mesh with the gear 15.
- a pair of arms 18 which are attached to the standard 11 by means of the screws 19.
- On the outer end of each arm 18 is mounted a roller 20.
- the pin 21 passes through both of the rollers 20.
- the rollers 20 ride on theribs 22 formed on the rear side of the guide 16.
- the slide 23 which is provided with a cut-away por tion 24 for the rack 17.
- a bracket 25 which is secured to the drill 10 by means of the bolts 26.
- the upper end of the slide 23 is secured to or made integral with the standard 11.
- the end 27 of the guide 16 is bent outwardly (as illustrated) to permit the introduction of large pieces of work 28.
- end 27 is provided with an inturned portion 29 against which the work 28 is held during the drilling operation.
- the upper end 3i) of the guide 16 is provided with a hole 31 by means of which the entire device may be suspended from a nail 32 driven into a block 33 which is mounted on a post 34, or any other suitable support.
- this device In the operation of this device as a portable drill the operator merely moves the lever 14 in 5 a direction away from the drill point 13 sufficiently far to admit the work 28. By reason of the increased leverage provided between the lever 14 and the gear 15 a very considerable force may be brought to bear against the drill point 13. If the hole being drilled is of such length, or the thickness of the worlcZS is sufficiently great to require same, the operator, by moving the lever 14, causes the gear 15 to move out of mesh with the rack 17 permitting the drill to be moved freely to the desired position, after which the gear 15 again brought into mesh with the rack 17, thereby enabling the user to select the best position for the drilling operation.
- a straight guiding frame having a rack at one end thereof in parallelism therewith and having an extension at the opposite end of said guiding frame reversely bent to form a work-holder in the path of said guide, a sliding carriage in said guide, a portable drill mounted on said carriage, a standard mounted on said portable drill, a lever-actuated segment gear mounted on said standard and meshing with rack, and arms secured at one end of the standard provided at the other with rollers engaging the rear faces of the frame to hold the gear and rack in meshed relation and guide the drill to and from the work.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Description
Aug. 15, 1933.
H. H. EHLEN ATTACHMENT FOR PORTABLE DRILLS Filed March 9, 1931 INVENTOR B Ha /2w?! EHLEN ATTORN EY Patented Aug. 15, 1933 UNITED STATES PATENT OFFICE 1 Claim.
This invention relates generally to portable drills, and particularly to an attachment for increasing the usefulness thereof. The main object of this invention is to provide a simple means for increasing the force which can be brought to bear against the drill.
The second object is to increase the ease with which holes can be drilled and to increase the accuracy of the drilling by reducing the amount of physical effort required and permitting the operator to devote more attention to the manner in which the drill is held.
The third object is to provide an attachment for portable drills by means of which same may be easily converted into a post drill.
These, and other objects, will become more apparent from the specification following as illustrated in the accompanying drawing, in which:
Fig. 1 is a side elevation of the drill and attachment.
Fig. 2 is an end elevation.
Fig. 3 is a plan.
Fig. 4 is a horizontal section along the line 4-4 in Fig. 1.
Similar numbers of reference refer to similar parts throughout the views.
Referring in detail to the drawing, there is illustrated a common form of electric drill 10 from which the handle has been removed and a standard 11 substituted. Across the standard 11 is mounted a shaft 12 which is normal to the drill point 13. On the shaft 12' is mounted a hand lever. 14, on one end of which is formed a segment gear 15.
The frame of the attachment consists ofan elongated guide 16 to the upper portion of which is secured a rack 17 adapted to mesh with the gear 15. In order to hold the rack 17 and the gear 15 in their correct relationship there is provided a pair of arms 18 which are attached to the standard 11 by means of the screws 19. On the outer end of each arm 18 is mounted a roller 20. The pin 21 passes through both of the rollers 20. The rollers 20 ride on theribs 22 formed on the rear side of the guide 16.
Within the guide 16 is slidably mounted the slide 23 which is provided with a cut-away por tion 24 for the rack 17. At the lower end of the slide 24 is a bracket 25 which is secured to the drill 10 by means of the bolts 26. The upper end of the slide 23 is secured to or made integral with the standard 11. The end 27 of the guide 16 is bent outwardly (as illustrated) to permit the introduction of large pieces of work 28. The
- The upper end 3i) of the guide 16 is provided with a hole 31 by means of which the entire device may be suspended from a nail 32 driven into a block 33 which is mounted on a post 34, or any other suitable support.
In the operation of this device as a portable drill the operator merely moves the lever 14 in 5 a direction away from the drill point 13 sufficiently far to admit the work 28. By reason of the increased leverage provided between the lever 14 and the gear 15 a very considerable force may be brought to bear against the drill point 13. If the hole being drilled is of such length, or the thickness of the worlcZS is sufficiently great to require same, the operator, by moving the lever 14, causes the gear 15 to move out of mesh with the rack 17 permitting the drill to be moved freely to the desired position, after which the gear 15 again brought into mesh with the rack 17, thereby enabling the user to select the best position for the drilling operation.
It can be seen from the foregoing that by the addition of a very small amount of weight the usefulness of the portable drill has been very much increased without detracting materially from its portability and all-around convenience.
In view of the fact that this device is so constructed that it is easily separable from the drill for use in locations which the attachment would otherwise render impossible, it may be found desirable to incorporate some form of handle on the standard 11 to render unnecessary the performing of any operation other than the sliding of the guide 16 away from the slide 23.
I claim:
In a device of the class described, a straight guiding frame having a rack at one end thereof in parallelism therewith and having an extension at the opposite end of said guiding frame reversely bent to form a work-holder in the path of said guide, a sliding carriage in said guide, a portable drill mounted on said carriage, a standard mounted on said portable drill, a lever-actuated segment gear mounted on said standard and meshing with rack, and arms secured at one end of the standard provided at the other with rollers engaging the rear faces of the frame to hold the gear and rack in meshed relation and guide the drill to and from the work.
HARRY H. EHLEN.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US521217A US1922532A (en) | 1931-03-09 | 1931-03-09 | Attachment for portable drills |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US521217A US1922532A (en) | 1931-03-09 | 1931-03-09 | Attachment for portable drills |
Publications (1)
Publication Number | Publication Date |
---|---|
US1922532A true US1922532A (en) | 1933-08-15 |
Family
ID=24075871
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US521217A Expired - Lifetime US1922532A (en) | 1931-03-09 | 1931-03-09 | Attachment for portable drills |
Country Status (1)
Country | Link |
---|---|
US (1) | US1922532A (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2868043A (en) * | 1957-05-20 | 1959-01-13 | Ollice C Robbins | Portable horizontal drill |
DE1270926B (en) * | 1956-02-03 | 1968-06-20 | Schenck Gmbh Carl | Optional processing device for the balancing bodies on balancing machines |
US4594035A (en) * | 1983-09-26 | 1986-06-10 | Hilti Aktiengesellschaft | Drilling stand |
US20050152756A1 (en) * | 2004-01-12 | 2005-07-14 | Ronald Howard | Universal pressure drill and srew runner |
US20140169897A1 (en) * | 2012-12-14 | 2014-06-19 | Robert Bosch Gmbh | Portable attachment for aligning a power tool and method |
CN111014779A (en) * | 2020-01-07 | 2020-04-17 | 李广超 | Electric hand drill auxiliary device that drills |
-
1931
- 1931-03-09 US US521217A patent/US1922532A/en not_active Expired - Lifetime
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1270926B (en) * | 1956-02-03 | 1968-06-20 | Schenck Gmbh Carl | Optional processing device for the balancing bodies on balancing machines |
US2868043A (en) * | 1957-05-20 | 1959-01-13 | Ollice C Robbins | Portable horizontal drill |
US4594035A (en) * | 1983-09-26 | 1986-06-10 | Hilti Aktiengesellschaft | Drilling stand |
US20050152756A1 (en) * | 2004-01-12 | 2005-07-14 | Ronald Howard | Universal pressure drill and srew runner |
US20140169897A1 (en) * | 2012-12-14 | 2014-06-19 | Robert Bosch Gmbh | Portable attachment for aligning a power tool and method |
US9434008B2 (en) * | 2012-12-14 | 2016-09-06 | Robert Bosch Tool Corporation | Portable attachment for aligning a power tool and method |
CN111014779A (en) * | 2020-01-07 | 2020-04-17 | 李广超 | Electric hand drill auxiliary device that drills |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US2322380A (en) | Vise | |
US1470143A (en) | Portable drill | |
US1922532A (en) | Attachment for portable drills | |
US2832395A (en) | Metal working vise with bending rollers | |
US2241021A (en) | Clamping device | |
US2674907A (en) | Drill jig | |
US1434946A (en) | Boring machine | |
US1758013A (en) | Adjustable wrench | |
US2384992A (en) | Splicing rig | |
US599914A (en) | nitschjmann | |
US1335807A (en) | Support for pneumatic tools | |
US2302356A (en) | Swinging cutoff saw | |
US1401259A (en) | Portable tree-holder | |
DE1035330B (en) | Handle for hand vacuum cleaner | |
US2269738A (en) | Supporting means for drapes | |
US2654955A (en) | Measuring apparatus | |
US2642760A (en) | Drill press attachment | |
US2344293A (en) | Drawbench gripper carriage | |
US2359689A (en) | Locking fixture | |
US1408113A (en) | Well-measuring device | |
US2415127A (en) | Dipping board | |
US1184759A (en) | Bow-drill. | |
CN206418981U (en) | A kind of safety platform pipe racking device | |
US1067877A (en) | Centering device. | |
US2023641A (en) | Tennis racket vise |