GB1521022A - Leaf spring weighing scale with optical detector - Google Patents
Leaf spring weighing scale with optical detectorInfo
- Publication number
- GB1521022A GB1521022A GB408777A GB408777A GB1521022A GB 1521022 A GB1521022 A GB 1521022A GB 408777 A GB408777 A GB 408777A GB 408777 A GB408777 A GB 408777A GB 1521022 A GB1521022 A GB 1521022A
- Authority
- GB
- United Kingdom
- Prior art keywords
- grating
- photo
- mounting
- feb
- weighing
- 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
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/002—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for postal parcels and letters
- G01G19/005—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups for postal parcels and letters with electric or electronic computing means
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/18—Indicating devices, e.g. for remote indication; Recording devices; Scales, e.g. graduated
- G01G23/36—Indicating the weight by electrical means, e.g. using photoelectric cells
- G01G23/361—Indicating the weight by electrical means, e.g. using photoelectric cells using photoelectric cells
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G3/00—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances
- G01G3/08—Weighing apparatus characterised by the use of elastically-deformable members, e.g. spring balances wherein the weighing element is in the form of a leaf spring
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mathematical Physics (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
Abstract
1521022 Photo-electric weighing apparatus PITNEY BOWES Inc 1 Feb 1977 [5 Feb 1976] 04087/77 Heading G1A Weighing apparatus suitable for weighing envelopes comprises an envelope tray 22 supported by leaf-springs 28, 30 and carrying on its underside a first grating 54, which because of the spring arrangement moves substantially vertically, with minimal lateral displacement, when a letter is placed on the tray. Movement of the grating is sensed by a photo-electric apparatus carried on a U-shaped support 36, which is fixed to the mounting frame (32) of the apparatus. Light from source 64 is directed through the grating 54 and via a second grating 46 whose lines are angled with respect to three of grating 54, to a pair or linear array of photo-cells 72. The sleeve 50 mounting grating 54 is axially and angularly adjustable. Angular adjustment of the disc 76 mounting the photo-cells is also possible so as to match the spacing of the MoirÚ fringes which are formed as vertical bands by the two gratings. The horizontal grating lines of 54 extend substantially further than the maximum extend of the photo-cell array, so as to allow for any sideways movement of the grating 54.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US65539376A | 1976-02-05 | 1976-02-05 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1521022A true GB1521022A (en) | 1978-08-09 |
Family
ID=24628715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB408777A Expired GB1521022A (en) | 1976-02-05 | 1977-02-01 | Leaf spring weighing scale with optical detector |
Country Status (5)
Country | Link |
---|---|
JP (1) | JPS5296055A (en) |
CA (1) | CA1071661A (en) |
DE (1) | DE2703899A1 (en) |
GB (1) | GB1521022A (en) |
NL (1) | NL7701006A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2438822A1 (en) * | 1978-10-10 | 1980-05-09 | Heidenhain Gmbh Dr Johannes | ANGULAR OR LENGTH MEASURING DEVICE |
US6265675B1 (en) | 1998-07-17 | 2001-07-24 | Francotyp-Postalia Ag & Co. | Apparatus for weighing moving postal matter |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3021535C2 (en) * | 1980-06-07 | 1986-01-02 | Diffracto Ltd., Windsor, Ontario | Weighing device |
JPS58129535A (en) * | 1982-01-27 | 1983-08-02 | Nippon Telegr & Teleph Corp <Ntt> | Touch panel type input device |
US5308934A (en) * | 1992-12-24 | 1994-05-03 | Pitney Bowes Inc. | Load cell scale mounting device |
DE202015002361U1 (en) * | 2014-06-16 | 2015-06-17 | Francotyp-Postalia Gmbh | Improvements to a dynamic scale with multiple weighing cups |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3807517A (en) * | 1972-12-26 | 1974-04-30 | Pitney Bowes Inc | Leaf spring scale |
-
1977
- 1977-01-31 CA CA270,727A patent/CA1071661A/en not_active Expired
- 1977-01-31 NL NL7701006A patent/NL7701006A/en not_active Application Discontinuation
- 1977-01-31 DE DE19772703899 patent/DE2703899A1/en not_active Withdrawn
- 1977-02-01 GB GB408777A patent/GB1521022A/en not_active Expired
- 1977-02-03 JP JP1030677A patent/JPS5296055A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2438822A1 (en) * | 1978-10-10 | 1980-05-09 | Heidenhain Gmbh Dr Johannes | ANGULAR OR LENGTH MEASURING DEVICE |
US6265675B1 (en) | 1998-07-17 | 2001-07-24 | Francotyp-Postalia Ag & Co. | Apparatus for weighing moving postal matter |
Also Published As
Publication number | Publication date |
---|---|
NL7701006A (en) | 1977-08-09 |
JPS5296055A (en) | 1977-08-12 |
DE2703899A1 (en) | 1977-08-11 |
CA1071661A (en) | 1980-02-12 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
PCNP | Patent ceased through non-payment of renewal fee |